Add framework for resolving (pun intended) libc namespace issues, using

wrapper .h files and asm labels to let internal calls resolve directly and
not be overridable or use the PLT.  Then, apply that framework to most of
the functions in stdio.h, string.h, err.h, and wchar.h.  Delete the
should-have-been-hidden-all-along _v?(err|warn)[cx]? symbols while here.

tests clean on i386, amd64, sparc64, powerpc, and mips64

naming feedback from kettenis@ and millert@
ok kettenis@

1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib/libc/string/memmem.c b/src/lib/libc/string/memmem.c
index 5793a7dfd7..823443b08a 100644
--- a/src/lib/libc/string/memmem.c
+++ b/src/lib/libc/string/memmem.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: memmem.c,v 1.3 2013/05/30 01:10:45 ajacoutot Exp $ */
+/*      $OpenBSD: memmem.c,v 1.4 2015/08/31 02:53:57 guenther Exp $ */
 /*-
  * Copyright (c) 2005 Pascal Gloor <pascal.gloor@spale.com>
  *
@@ -61,3 +61,4 @@ memmem(const void *l, size_t l_len, const void *s, size_t s_len)
 
         return NULL;
 }
+DEF_WEAK(memmem);