Force link to zlib for all platforms/tragets to be sure there'll
be no gzopen64 symbol undefined (it was in some dependend library, so
blenderplayer wasn't working in fedora 13 32bit)
- Use the same config as we're using for release builds
- Added stipping (maybe it should be generalized)
- Not software gl packing, bot would be easy to add
Note, that you should have special environment to create
proper linux builts (which would work for everybody)