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/explicit_bzero.c b/src/lib/libc/string/explicit_bzero.c
index 3e33ca85b8..003ea7cc4c 100644
--- a/src/lib/libc/string/explicit_bzero.c
+++ b/src/lib/libc/string/explicit_bzero.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: explicit_bzero.c,v 1.3 2014/06/21 02:34:26 matthew Exp $ */
+/*      $OpenBSD: explicit_bzero.c,v 1.4 2015/08/31 02:53:57 guenther Exp $ */
 /*
  * Public domain.
  * Written by Matthew Dempsky.
@@ -17,3 +17,4 @@ explicit_bzero(void *buf, size_t len)
         memset(buf, 0, len);
         __explicit_bzero_hook(buf, len);
 }
+DEF_WEAK(explicit_bzero);