This is mostly a mechanical change, apart from:
- fix the name of attribute_c_tests to match its filename (attribs.cc)
- fix the name of opt_proposer_c to match its filename (opt-suggestions.cc)
- delete a bogus "modref_c_tests" decl from ipa-modref-tree.h that's been
  present since the initial commit of that file
  (d119f34c)

gcc/ChangeLog:
	* attribs.cc (attribute_c_tests): Rename to...
	(attribs_cc_tests): ...this.
	* bitmap.cc (bitmap_c_tests): Rename to...
	(bitmap_cc_tests): ...this.
	* cgraph.cc (cgraph_c_finalize): Rename to...
	(cgraph_cc_finalize): ...this.
	(cgraph_c_tests): Rename to...
	(cgraph_cc_tests): ...this.
	* cgraph.h (cgraph_c_finalize): Rename to...
	(cgraph_cc_finalize): ...this.
	(cgraphunit_c_finalize): Rename to...
	(cgraphunit_cc_finalize): ...this.
	* cgraphunit.cc (cgraphunit_c_finalize): Rename to...
	(cgraphunit_cc_finalize): ...this.
	* convert.cc (convert_c_tests): Rename to...
	(convert_cc_tests): ...this.
	* dbgcnt.cc (dbgcnt_c_tests): Rename to...
	(dbgcnt_cc_tests): ...this.
	* diagnostic-show-locus.cc (diagnostic_show_locus_c_tests): Rename to...
	(diagnostic_show_locus_cc_tests): ...this.
	* diagnostic.cc (diagnostic_c_tests): Rename to...
	(diagnostic_cc_tests): ...this.
	* dumpfile.cc (dumpfile_c_tests): Rename to...
	(dumpfile_cc_tests): ...this.
	* dwarf2out.cc (dwarf2out_c_finalize): Rename to...
	(dwarf2out_cc_finalize): ...this.
	* dwarf2out.h (dwarf2out_c_finalize): Rename to...
	(dwarf2out_cc_finalize): ...this.
	* edit-context.cc (edit_context_c_tests): Rename to...
	(edit_context_cc_tests): ...this.
	* et-forest.cc (et_forest_c_tests): Rename to...
	(et_forest_cc_tests): ...this.
	* fibonacci_heap.cc (fibonacci_heap_c_tests): Rename to...
	(fibonacci_heap_cc_tests): ...this.
	* fold-const.cc (fold_const_c_tests): Rename to...
	(fold_const_cc_tests): ...this.
	* function-tests.cc (function_tests_c_tests): Rename to...
	(function_tests_cc_tests): ...this.
	* gcse.cc (gcse_c_finalize): Rename to...
	(gcse_cc_finalize): ...this.
	* gcse.h (gcse_c_finalize): Rename to...
	(gcse_cc_finalize): ...this.
	* ggc-tests.cc (ggc_tests_c_tests): Rename to...
	(ggc_tests_cc_tests): ...this.
	* gimple-ssa-store-merging.cc (store_merging_c_tests): Rename to...
	(store_merging_cc_tests): ...this.
	* gimple.cc (gimple_c_tests): Rename to...
	(gimple_cc_tests): ...this.
	* hash-map-tests.cc (hash_map_tests_c_tests): Rename to...
	(hash_map_tests_cc_tests): ...this.
	* hash-set-tests.cc (hash_set_tests_c_tests): Rename to...
	(hash_set_tests_cc_tests): ...this.
	* input.cc (input_c_tests): Rename to...
	(input_cc_tests): ...this.
	* ipa-cp.cc (ipa_cp_c_finalize): Rename to...
	(ipa_cp_cc_finalize): ...this.
	* ipa-fnsummary.cc (ipa_fnsummary_c_finalize): Rename to...
	(ipa_fnsummary_cc_finalize): ...this.
	* ipa-fnsummary.h (ipa_fnsummary_c_finalize): Rename to...
	(ipa_fnsummary_cc_finalize): ...this.
	* ipa-modref-tree.cc (ipa_modref_tree_c_tests): Rename to...
	(ipa_modref_tree_cc_tests): ...this.
	* ipa-modref-tree.h (modref_c_tests): Delete bogus decl.
	* ipa-modref.cc (ipa_modref_c_finalize): Rename to...
	(ipa_modref_cc_finalize): ...this.
	* ipa-modref.h (ipa_modref_c_finalize): Rename to...
	(ipa_modref_cc_finalize): ...this.
	* ipa-prop.h (ipa_cp_c_finalize): Rename to...
	(ipa_cp_cc_finalize): ...this.
	* ipa-reference.cc (ipa_reference_c_finalize): Rename to...
	(ipa_reference_cc_finalize): ...this.
	* ipa-reference.h (ipa_reference_c_finalize): Rename to...
	(ipa_reference_cc_finalize): ...this.
	* ira-costs.cc (ira_costs_c_finalize): Rename to...
	(ira_costs_cc_finalize): ...this.
	* ira.h (ira_costs_c_finalize): Rename to...
	(ira_costs_cc_finalize): ...this.
	* opt-suggestions.cc (opt_proposer_c_tests): Rename to...
	(opt_suggestions_cc_tests): ...this.
	* opts.cc (opts_c_tests): Rename to...
	(opts_cc_tests): ...this.
	* predict.cc (predict_c_tests): Rename to...
	(predict_cc_tests): ...this.
	* pretty-print.cc (pretty_print_c_tests): Rename to...
	(pretty_print_cc_tests): ...this.
	* read-rtl-function.cc (read_rtl_function_c_tests): Rename to...
	(read_rtl_function_cc_tests): ...this.
	* rtl-tests.cc (rtl_tests_c_tests): Rename to...
	(rtl_tests_cc_tests): ...this.
	* sbitmap.cc (sbitmap_c_tests): Rename to...
	(sbitmap_cc_tests): ...this.
	* selftest-run-tests.cc (selftest::run_tests): Update calls for
	_c_ to _cc_ function renamings; fix names of attribs and
	opt-suggestions tests.
	* selftest.cc (selftest_c_tests): Rename to...
	(selftest_cc_tests): ...this.
	* selftest.h (attribute_c_tests): Rename to...
	(attribs_cc_tests): ...this.
	(bitmap_c_tests): Rename to...
	(bitmap_cc_tests): ...this.
	(cgraph_c_tests): Rename to...
	(cgraph_cc_tests): ...this.
	(convert_c_tests): Rename to...
	(convert_cc_tests): ...this.
	(diagnostic_c_tests): Rename to...
	(diagnostic_cc_tests): ...this.
	(diagnostic_show_locus_c_tests): Rename to...
	(diagnostic_show_locus_cc_tests): ...this.
	(dumpfile_c_tests): Rename to...
	(dumpfile_cc_tests): ...this.
	(edit_context_c_tests): Rename to...
	(edit_context_cc_tests): ...this.
	(et_forest_c_tests): Rename to...
	(et_forest_cc_tests): ...this.
	(fibonacci_heap_c_tests): Rename to...
	(fibonacci_heap_cc_tests): ...this.
	(fold_const_c_tests): Rename to...
	(fold_const_cc_tests): ...this.
	(function_tests_c_tests): Rename to...
	(function_tests_cc_tests): ...this.
	(ggc_tests_c_tests): Rename to...
	(ggc_tests_cc_tests): ...this.
	(gimple_c_tests): Rename to...
	(gimple_cc_tests): ...this.
	(hash_map_tests_c_tests): Rename to...
	(hash_map_tests_cc_tests): ...this.
	(hash_set_tests_c_tests): Rename to...
	(hash_set_tests_cc_tests): ...this.
	(input_c_tests): Rename to...
	(input_cc_tests): ...this.
	(opts_c_tests): Rename to...
	(opts_cc_tests): ...this.
	(predict_c_tests): Rename to...
	(predict_cc_tests): ...this.
	(pretty_print_c_tests): Rename to...
	(pretty_print_cc_tests): ...this.
	(read_rtl_function_c_tests): Rename to...
	(read_rtl_function_cc_tests): ...this.
	(rtl_tests_c_tests): Rename to...
	(rtl_tests_cc_tests): ...this.
	(sbitmap_c_tests): Rename to...
	(sbitmap_cc_tests): ...this.
	(selftest_c_tests): Rename to...
	(selftest_cc_tests): ...this.
	(simplify_rtx_c_tests): Rename to...
	(simplify_rtx_cc_tests): ...this.
	(spellcheck_c_tests): Rename to...
	(spellcheck_cc_tests): ...this.
	(spellcheck_tree_c_tests): Rename to...
	(spellcheck_tree_cc_tests): ...this.
	(sreal_c_tests): Rename to...
	(sreal_cc_tests): ...this.
	(store_merging_c_tests): Rename to...
	(store_merging_cc_tests): ...this.
	(tree_c_tests): Rename to...
	(tree_cc_tests): ...this.
	(tree_cfg_c_tests): Rename to...
	(tree_cfg_cc_tests): ...this.
	(typed_splay_tree_c_tests): Rename to...
	(typed_splay_tree_cc_tests): ...this.
	(vec_c_tests): Rename to...
	(vec_cc_tests): ...this.
	(vec_perm_indices_c_tests): Rename to...
	(vec_perm_indices_cc_tests): ..this.
	(opt_proposer_c_tests): Rename to...
	(opt_suggestions_cc_tests): ...this.
	(dbgcnt_c_tests): Rename to...
	(dbgcnt_cc_tests): ...this.
	(ipa_modref_tree_c_tests): Rename to...
	(ipa_modref_tree_cc_tests): ...this.
	* simplify-rtx.cc (simplify_rtx_c_tests): Rename to...
	(simplify_rtx_cc_tests): ...this.
	* spellcheck-tree.cc (spellcheck_tree_c_tests): Rename to...
	(spellcheck_tree_cc_tests): ...this.
	* spellcheck.cc (spellcheck_c_tests): Rename to...
	(spellcheck_cc_tests): ...this.
	* sreal.cc (sreal_c_tests): Rename to...
	(sreal_cc_tests): ...this.
	* toplev.cc (toplev::finalize): Update calls for _c_ to _cc_
	function renamings.
	* tree-cfg.cc (tree_cfg_c_tests): Rename to...
	(tree_cfg_cc_tests): ...this.
	* tree.cc (tree_c_tests): Rename to...
	(tree_cc_tests): ...this.
	* typed-splay-tree.cc (typed_splay_tree_c_tests): Rename to...
	(typed_splay_tree_cc_tests): ...this.
	* vec-perm-indices.cc (vec_perm_indices_c_tests): Rename to...
	(vec_perm_indices_cc_tests): ...this.
	* vec.cc (vec_c_tests): Rename to...
	(vec_cc_tests): ...this.

gcc/c-family/ChangeLog:
	* c-common.cc (c_common_c_tests): Rename to...
	(c_common_cc_tests): ...this.
	(c_family_tests): Update calls for .c to .cc renaming.
	* c-common.h (c_format_c_tests): Rename to...
	(c_format_cc_tests): ...this.
	(c_indentation_c_tests): Rename to...
	(c_indentation_cc_tests): ...this.
	(c_pretty_print_c_tests): Rename to...
	(c_pretty_print_cc_tests): ...this.
	* c-format.cc (c_format_c_tests): Rename to...
	(c_format_cc_tests): ...this.
	* c-indentation.cc (c_indentation_c_tests): Rename to...
	(c_indentation_cc_tests): ...this.
	* c-pretty-print.cc (c_pretty_print_c_tests): Rename to...
	(c_pretty_print_cc_tests): ...this.

gcc/cp/ChangeLog:
	* cp-lang.cc (selftest::run_cp_tests): Update calls for .c to .cc
	renaming.
	* cp-tree.h (cp_pt_c_tests): Rename to...
	(cp_pt_cc_tests): ...this.
	(cp_tree_c_tests): Rename to...
	(cp_tree_cc_tests): ...this.
	* pt.cc (cp_pt_c_tests): Rename to...
	(cp_pt_cc_tests): ...this.
	* tree.cc (cp_tree_c_tests): Rename to...
	(cp_tree_cc_tests): ...this.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>