* Makefile.in (opts.o): Depend on target.h.
	* opts.c (decode_options): Use targetm.default_short_enums
	instead of DEFAULT_SHORT_ENUMS.
	* system.h (DEFAULT_SHORT_ENUMS): Poison.
	* target-def.h (TARGET_DEFAULT_SHORT_ENUMS): New.
	(TARGET_INITIALIZER): Add TARGET_DEFAULT_SHORT_ENUMS.
	* target.h (gcc_target): Add default_short_enums.
	* config/cris/cris.h: Remove a comment about
	DEFAULT_SHORT_ENUMS.
	* config/ip2k/ip2k.h: Likewise.
	* doc/tm.texi (DEFAULT_SHORT_ENUMS): Change to
	TARGET_DEFAULT_SHORT_ENUMS.  Update the description.

From-SVN: r78303