Intercept libsystem_platform.dylib:_platform_strncmp and dyld:memchr
on OSX 10.9.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14099 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/shared/vg_replace_strmem.c b/shared/vg_replace_strmem.c
index 511706a..ce78b9b 100644
--- a/shared/vg_replace_strmem.c
+++ b/shared/vg_replace_strmem.c
@@ -575,9 +575,10 @@
  STRNCMP(VG_Z_LIBC_SONAME, __strncmp_sse42)
 
 #elif defined(VGO_darwin)
- //STRNCMP(VG_Z_LIBC_SONAME, strncmp)
- //STRNCMP(VG_Z_DYLD,        strncmp)
  STRNCMP(VG_Z_LIBC_SONAME,        strncmp)
+# if DARWIN_VERS == DARWIN_10_9
+  STRNCMP(libsystemZuplatformZddylib, _platform_strncmp)
+# endif
 
 #endif
 
@@ -793,6 +794,7 @@
 
 #elif defined(VGO_darwin)
 # if DARWIN_VERS == DARWIN_10_9
+  MEMCHR(VG_Z_DYLD,                   memchr)
   MEMCHR(libsystemZuplatformZddylib, _platform_memchr)
 # endif