Use bool in gprof

Use bool in gprof

	* basic_blocks.c: Replace bfd_boolean with bool, FALSE with false,
	and TRUE with true throughout.
	* basic_blocks.h: Likewise.
	* cg_arcs.c: Likewise.
	* cg_dfn.c: Likewise.
	* cg_print.c: Likewise.
	* corefile.c: Likewise.
	* gmon_io.c: Likewise.
	* gprof.c: Likewise.
	* gprof.h: Likewise.
	* hist.c: Likewise.
	* mips.c: Likewise.
	* source.c: Likewise.
	* source.h: Likewise.
	* sym_ids.c: Likewise.
	* sym_ids.h: Likewise.
	* symtab.h: Likewise.
	* vax.c: Likewise.