* call.c (convert_like): Macrofy.

	* call.c (convert_like): Macrofy.
	(convert_like_with_context): New macro.
	(convert_like_real): Renamed from convert_like.  Add calling
	context parameters, for diagnostics. Add recursive flag.  Call
	dubious_conversion_warnings for outer conversion.
	(build_user_type_conversion): Use convert_like_with_context.
	(build_over_call): Likewise. Don't warn about dubious
	conversions here. Adjust convert_default_arg calls.
	(convert_default_arg): Add context parameters for diagnostics.
	Pass throught to convert_like_with_context.
	* cp-tree.h (convert_default_arg): Add context parameters.
	(dubious_conversion_warnings): Prototype new function.
	* typeck.c (convert_arguments): Adjust convert_default_arg call.
	(dubious_conversion_warnings): New function, broken
	out of convert_for_assignment.
	(convert_for_assignment): Adjust.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32341 138bc75d-0d04-0410-961f-82ee72b054a4