Misc warning fixes

	Misc warning fixes

	* giscanner/scannerparser.y: Fix the "Ignoring non-UTF-8 constant
	string" error to print the right value.

	* tests/scanner/annotation.c (backslash_parsing_tester)
	(backslash_parsing_tester_2): make these non-static to avoid a
	warning.
	(annotation_object_string_out)
	(annotation_string_zero_terminated): fix return values

	* tests/scanner/annotation.h (annotation_object_with_voidp):
	prototype this

	* tests/scanner/gtkfrob.c:
	* tests/scanner/gtkfrob.h (gtk_frob_language_manager_get_default):
	fix prototype. (s/()/(void)/).

	* tools/compiler.c (format_output): fix signed/unsigned warning.
	Output a prototype for register_typelib() to avoid warnings later.

svn path=/trunk/; revision=1071