Rename DOOM-EULA and MUSLIB to something correct

...ish.
zandronum: Bump to 1.2.2 and major fixes in exlib

    * refactor code a bit
    * scm now needs sqlite3 sources downloaded, because that somehow
      makes sense
    * notes for each license used
    * revise DEPENDENCIES (from wiki)
    * don't install anything during src_compile
    * install the more useful docs
    * build server too
vavoom: Refactor exlib

Removed fauxmight from BUGS_TO only because I've changed this thing way
too much, and _afaik_ he isn't working on his repo any longer.
doomsday: Make sure SDL:0 is used