Permit garbage collection on any compiler generated memory allocation.

From-SVN: r170760

libgo/runtime/go-new.c

@@ -11,7 +11,7 @@
 void *
 __go_new (size_t size)
 {
-  return __go_alloc (size);
+  return runtime_mallocgc (size, 0, 1, 1);
 }
 
 void *