Bug 1134923 - Remove NS_Alloc/NS_Realloc/NS_Free. r=nfroyd

They are kept around for the sake of the standalone glue, which is used
for e.g. webapprt, which doesn't have direct access to jemalloc, and thus
still needs a wrapper to go through the xpcom function list and get to
jemalloc from there.

dom/plugins/base/nsNPAPIPlugin.cpp

@@ -1848,7 +1848,7 @@ _releasevariantvalue(NPVariant* variant)
           }
         }
 #else
-        NS_Free((void *)s->UTF8Characters);
+        free((void *)s->UTF8Characters);
 #endif
       }
       break;