Tweaked the way to use getScript() like functions;

Made condition and default_expand parameters of expand_keywords optional.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1080 0fc631ac-6414-0410-93d0-97cfa31319b6

src/script/image.cpp

@@ -77,7 +77,7 @@ bool ScriptableImage::update(Context& ctx) {
 	}
 }
 
-ScriptP ScriptableImage::getScriptP() {
+ScriptP ScriptableImage::getValidScriptP() {
 	if (script) return script.getScriptP();
 	// return value or a blank image
 	ScriptP s(new Script);