asan.c: Remove struct tags when referring to class varpool_node.

	* asan.c: Remove struct tags when referring to class varpool_node.
	* cgraph.h: Likewise.
	* cgraphbuild.c: Likewise.
	* cgraphunit.c: Likewise.
	* dbxout.c: Likewise.
	* dwarf2out.c: Likewise.
	* gimple-fold.c: Likewise.
	* ipa-devirt.c: Likewise.
	* ipa-ref-inline.h: Likewise.
	* ipa-ref.h: Likewise.
	* ipa-reference.c: Likewise.
	* ipa-utils.c: Likewise.
	* ipa.c: Likewise.
	* lto-cgraph.c: Likewise.
	* lto-streamer-out.c: Likewise.
	* lto-streamer.h: Likewise.
	* passes.c: Likewise.
	* toplev.c: Likewise.
	* tree-eh.c: Likewise.
	* tree-emutls.c: Likewise.
	* tree-pass.h: Likewise.
	* tree-ssa-structalias.c: Likewise.
	* tree-vectorizer.c: Likewise.
	* tree.c: Likewise.
	* varasm.c: Likewise.
	* varpool.c: Likewise.

	* cp/decl2.c: Remove struct tags when referring to class varpool_node.

	* lto/lto.c: Remove struct tags when referring to class varpool_node.
	* lto/lto-partition.c: Likewise.
	* lto/lto-symtab.c: Likewise.

From-SVN: r205733