Merge branch 'master' of github.com:dsm9000/sdc into slab_alloc_threadcache

Author: dsm9000

sdlib/d/gc/slab.d

@@ -76,6 +76,10 @@ public:
 		return true;
 	}
 
+	void free() {
+		setFreeSpace(0);
+	}
+
 	@property
 	Finalizer finalizer() {
 		if (!finalizerEnabled) {