This switches all hash_table users to use the layout that stores
elements of type value_type in the hash table instead of the one storing
value_type *.  Since it becomes unused support for the value_type *
layout is removed.

gcc/

	* hash-table.h: Remove version of hash_table that stored value_type *.
	* asan.c, attribs.c, bitmap.c, cfg.c, cgraph.h, config/arm/arm.c,
	config/i386/winnt.c, config/ia64/ia64.c, config/mips/mips.c,
	config/sol2.c, coverage.c, cselib.c, dse.c, dwarf2cfi.c,
	dwarf2out.c, except.c, gcse.c, genmatch.c, ggc-common.c,
	gimple-ssa-strength-reduction.c, gimplify.c, haifa-sched.c,
	hard-reg-set.h, hash-map.h, hash-set.h, ipa-devirt.c, ipa-icf.h,
	ipa-profile.c, ira-color.c, ira-costs.c, loop-invariant.c,
	loop-iv.c, loop-unroll.c, lto-streamer.h, plugin.c, postreload-gcse.c,
	reginfo.c, statistics.c, store-motion.c, trans-mem.c, tree-cfg.c,
	tree-eh.c, tree-hasher.h, tree-into-ssa.c, tree-parloops.c,
	tree-sra.c, tree-ssa-coalesce.c, tree-ssa-dom.c, tree-ssa-live.c,
	tree-ssa-loop-im.c, tree-ssa-loop-ivopts.c, tree-ssa-phiopt.c,
	tree-ssa-pre.c, tree-ssa-reassoc.c, tree-ssa-sccvn.c,
	tree-ssa-structalias.c, tree-ssa-tail-merge.c,
	tree-ssa-threadupdate.c, tree-vectorizer.c, tree-vectorizer.h,
	valtrack.h, var-tracking.c, vtable-verify.c, vtable-verify.h: Adjust.

libcc1/

	* plugin.cc: Adjust for hash_table changes.

gcc/java/

	* jcf-io.c: Adjust for hash_table changes.

gcc/lto/

	* lto.c: Adjust for hash_table changes.

gcc/objc/

	* objc-act.c: Adjust for hash_table changes.

From-SVN: r222213