cstring: undefine macros defined in new strings.h.

include/cxx/cstring

@@ -44,6 +44,19 @@
 #include <string.h>
 #include <strings.h>
 
+//***************************************************************************
+// Pre-processor Definitions
+//***************************************************************************
+
+// Remove macros defined in strings.h.  The index() definition, in
+// particular, can cause naming collision problems.
+
+#undef bcmp
+#undef bcopy
+#undef bzero
+#undef index
+#undef rindex
+
 //***************************************************************************
 // Namespace
 //***************************************************************************

include/strings.h

@@ -47,7 +47,11 @@
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
-/* Compatibility definitions */
+/* Compatibility definitions
+ *
+ * Marked LEGACY in Open Group Base Specifications Issue 6/IEEE Std 1003.1-2004
+ * Removed from Open Group Base Specifications Issue 7/IEEE Std 1003.1-2008
+ */
 
 #define bcmp(b1,b2,len)  memcmp(b1,b2,(size_t)len)
 #define bcopy(b1,b2,len) (void)memmove(b2,b1,len)