* genautomata.c: Don't include ctype.h or limits.h.  Use ISSPACE,
	not isspace.
	* gengtype-lex.l: Don't include ctype.h and use ISSPACE/ISIDNUM in
	lieu of isspace/IDchar.
	* gengtype.c: Likewise for ctype.h and ISALNUM vs isalnum.
	* read-rtl.c: Likewise for ctype.h.  Don't define ISDIGIT or
	ISSPACE.

From-SVN: r54392