+ set utf-8 encoding when recording a macro

src/Gui/Macro.cpp

@@ -118,7 +118,9 @@ void MacroManager::commit(void)
             }
         }
 
-        QString header = QString::fromAscii("# Macro Begin: ");
+        QString header;
+        header += QString::fromAscii("# -*- coding: utf-8 -*-\n\n");
+        header += QString::fromAscii("# Macro Begin: ");
         header += this->macroName;
         header += QString::fromAscii(" +++++++++++++++++++++++++++++++++++++++++++++++++\n");