More config.c clean-ups and added some plumbing for the future ZIP and MO image history.

src/qt/qt_platform.cpp

@@ -304,6 +304,18 @@ path_slash(char *path)
     path_normalize(path);
 }
 
+char *
+path_get_slash(char *path)
+{
+    auto        len = strlen(path);
+    std::string ret = "";
+
+    if (path[len - 1] != '/')
+        ret = "/";
+
+    return (char *) ret.c_str();
+}
+
 void
 path_append_filename(char *dest, const char *s1, const char *s2)
 {