- made bluramount also into a gameinfo option
- negative gl_menu_blur cvar now uses gameinfo option, 0 disables it
- removed gl_menu_blur_enabled since gl_menu_blur==0 does that anyway
- made gl_menu_blur default to -1 to use gameinfo option
- add default gameinfo bluramount options
Both 'Adventures of Square' IWADs were missing an entry for base MAPINFO and as a result did not define the common editor numbers.
To prevent this, a new mindefaults MAPINFO was added to zdoom.pk3 which now gets loaded if IWADINFO does not specify a game-specific file.
This minimum setting sets all gamedefaults to a reasonable base value and defines all other things that are required to be defined.
