[layers] merged in the recent changes from trunk

git-svn-id: svn://pulkomandy.tk/GrafX2/branches/layers@1162 416bcca6-2ee7-4201-b75f-2eb2f807beb1

const.h

@@ -1,3 +1,5 @@
+/* vim:expandtab:ts=2 sw=2:
+*/
 /*  Grafx2 - The Ultimate 256-color bitmap paint program
 
     Copyright 2008 Yves Rizoud
@@ -112,6 +114,7 @@ enum FILE_FORMATS
   FORMAT_C64,
   FORMAT_KCF,
   FORMAT_PAL,
+  FORMAT_SCR,
   FORMAT_MISC, ///< Must be last of enum: others formats recognized by SDL_image
 };