mpv.rc, mpv.exe.manifest: change license to LGPL

All authors have agreed.

mpv.exe.manifest probably can't have a copyright header, so it doesn't.

These files don't add license info to the executables. And of course the
executable license is still GPL.

Copyright

@@ -182,8 +182,8 @@ LGPL relicensing status:
     osdep/main-fn.h                 LGPL
     osdep/main-fn-unix.c            LGPL
     osdep/main-fn-win.c             LGPL
-    osdep/mpv.exe.manifest          easy
-    osdep/mpv.rc                    easy
+    osdep/mpv.exe.manifest          LGPL
+    osdep/mpv.rc                    LGPL
     osdep/path.h                    LGPL
     osdep/path-macosx.m             LGPL
     osdep/path-unix.c               LGPL

osdep/mpv.rc

@@ -1,20 +1,18 @@
 /*
- * Windows resource file for mpv
- *
  * This file is part of mpv.
  *
- * mpv is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
  *
  * mpv is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License along
- * with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <winver.h>