vec.h: Remove all #if IN_GENGTYPE blocks.

vec.h: Remove all #if IN_GENGTYPE blocks.

	* vec.h: Remove all #if IN_GENGTYPE blocks.
	Add comment saying that changes may require adjustments to gengtype.
	* gengtype.c: Don't include coretypes.h or tm.h.
	Add comment to inclusion of errors.h.
	(note_def_vec, note_def_vec_alloc): New functions.
	* gengtype.h: Declare new functions.
	* gengtype-lex.l: Don't include coretypes.h.
	(YY_INPUT, macro_input, push_macro_expansion, mangle_macro_name):
	Delete.
	(update_lineno): Remove unnecessary prototype.
	(DEF_VEC_* rules): Simplify using note_def_vec / note_def_vec_alloc.
	(VEC rule): Just return VEC_TOKEN.
	* gengtype-yacc.y (VEC_TOKEN): New token type.
	(type): Add a production for VEC(a,b).
	* Makefile.in: Update dependencies.

From-SVN: r123229