Merge remote-tracking branches 'neheb/bind', 'neheb/move' and 'neheb/str'

src/tag/ApeLoader.cxx

@@ -38,7 +38,7 @@ struct ApeFooter {
 };
 
 bool
-tag_ape_scan(InputStream &is, ApeTagCallback callback)
+tag_ape_scan(InputStream &is, const ApeTagCallback& callback)
 try {
 	std::unique_lock<Mutex> lock(is.mutex);
 

src/tag/ApeLoader.hxx

@@ -37,6 +37,6 @@ typedef std::function<bool(unsigned long flags, const char *key,
  * present
  */
 bool
-tag_ape_scan(InputStream &is, ApeTagCallback callback);
+tag_ape_scan(InputStream &is, const ApeTagCallback& callback);
 
 #endif