* Makefile.in (GEN_PROTOS_OBJS): Remove libcpp.a.
	(gen_protos.o): Don't depend on cpplib.h or cpphash.h.
	(fix-header.o): Don't depend on cpphash.h.

	* scan.c (hashstr): New function.
	* scan.h: Prototype it.
	* fix-header.c: Don't include cpphash.h.  Use hashstr.
	* gen-protos.c: Don't include cpphash.h or cpplib.h.  Use
	hashstr.  Report hash table statistics.  Add private
	definition of xrealloc.

From-SVN: r31854