* cp-tree.h (lang_decl): Remove pretty_function_p.
	(DECL_PRETTY_FUNCTION_P): Use TREE_LANG_FLAG_0, not a bit in the
	language-specific node.
	* decl.c (cp_make_fname_decl): Use build_decl, not
	build_lang_decl, to build the variables.
	(grokvardecl): Don't call build_lang_decl for local variables in
	templates.
	(grokdeclarator): Don't call build_lang_decl for local type
	declarations in templates.
	* lex.c (retrofit_lang_decl): Use ggc_alloc_obj to allocated
	zero'd memory, rather than calling memset.
	* pt.c: Include hashtab.h.
	(local_specializations): New variable.
	(retrieve_local_specialization): Use it.
	(register_local_specialization): Likewise.
	(tsubst_decl): Don't assume local variables have
	DECL_LANG_SPECIFIC.
	(instantiate_decl): Set up local_specializations.
	* Makefile.in (HTAB_H): New variable.

From-SVN: r33369