-Added support for 10 hostcache masks, which will be at the same time.

-Added support for 10 hostcache masks, which will be at the same time.
 5 will be concatenated with AND and the other 5 with OR, so you'll have
 plenty of possibilities to mask whatever you want.
-Changed the mask structure and function to be a bit more generic.
-Added 3 new comparison operators (NOTEQUAL, CONTAINS and NOTCONTAIN - the
 latter two for strings)
-Adapted the builtins to work with multiple masks.

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@4890 d7cf8633-e32d-0410-b094-e92efae38249