c-common.c: Don't undefine GCC_DIAG_STYLE.

	* c-common.c: Don't undefine GCC_DIAG_STYLE.
	(fname_decl): Don't use xxx_with_decl.
	(c_add_case_label): Likewise.
	(handle_section_attribute): Likewise.
	(handle_alias_attribute): Likewise.
	(handle_no_instrument_function_attribute): Likewise.
	(handle_no_limit_stack_attribute): Likewise.
	* c-objc-common.c (c_tree_printer): Print IDENTIFIER_NODEs.
	* c-format.c (gcc_cdiag_char_table): Add '%E' format-specifier.

From-SVN: r69573