libcc1 base API: add set_verbose and new version of compile

libcc1 base API: add set_verbose and new version of compile

for  include/ChangeLog

	* gcc-interface.h (enum gcc_base_api_version): Add comment to
	GCC_FE_VERSION_1.
	(struct gcc_base_vtable): Rename compile to compile_v0.
	Update comment for compile.  New methods set_verbose and
	compile.

for  libcc1/ChangeLog

	* libcc1.cc: Include intl.h.
	(struct libcc1): Add field verbose.
	(libcc1::libcc1): Initialize it.
	(libcc1_set_verbose): New function.
	(libcc1_set_arguments): Print messages for VERBOSE.
	(libcc1_compile): Remove parameter verbose.  Use VERBOSE from
	SELF.
	(libcc1_compile_v0): New function.
	(vtable): Use libcc1_compile_v0 and add libcc1_compile and
	libcc1_set_verbose.

From-SVN: r245048