Log Message:
emulators/b-em: Upgrade from version 2.1a to 2.2 (Fixes zlib 1.27)

Version 2.1a is not compatible with zlib 1.26+.  Luckily this problem
was fixed in version 2.2.  Three patches were removed, and a few were
tweaked.

src/linux.c and src/win.c now have dos line endings.  I used the
technique seen in textproc/FlightCrew to convert these to unix
endings after extraction.  That should allow this package to build
on all platforms where zip handling of line ending differs.

Also defined GPLv3 license.