fold-const.c (constant_boolean_node): Make extern.

	* fold-const.c (constant_boolean_node): Make extern.
	(make_range): Wrap long lines.
	(fold_cond_expr_with_comparison): Remove unnecessary call to
	pedantic_non_lvalue.  Add missing calls to fold_convert.
	(fold_truthop): Add missing calls to fold_convert.
	(fold): Likewise.
	* tree.h (constant_boolean_node): Add prototype here.
	* builtins.c (expand_builtin_strncmp): Add missing calls to
	fold_convert.
	* tree-ssa-dom.c (record_equivalences_from_incoming_edge):
	Call fold_convert and constant_boolean_node to correct types.
	* tree-ssa-forwprop.c (substitute_single_use_vars): Add
	missing call to fold_convert to correct types.

From-SVN: r85169