cp-tree.h (DECL_HIDDEN_P): New.

	gcc/cp/
	* cp-tree.h (DECL_HIDDEN_P): New.
	* name-lookup.c (set_decl_context)
	set_local_extern_decl_linkage):	New, broken out of ...
	(pushdecl_maybe_friend_1): ... here.  Call them.

	gcc/testsuite/
	* g++.dg/parse/ctor9.C: Adjust expected error.
(--This line, and those below, will be ignored--

M    cp/name-lookup.c
M    cp/ChangeLog
M    cp/cp-tree.h
M    testsuite/ChangeLog
M    testsuite/g++.dg/parse/ctor9.C

From-SVN: r248373