Update to golang port of lzhuf

[martinhpedersen]

Ref la5nta/wl2k-go#41:

Porting the code to Go would eliminate the need for cgo, thus making the wl2k-go framework even more portable. It will also allow us to further improve the code, getting rid of the intermediate temp files and other rough edges.

This will also enable us to cross compile Pat to a handful new platforms (dragonfly, freebsd, netbsd, openbsd, solaris, plan9). We could even cross compile the windows and darwin releases from a Linux host.

The port has already been written, but need further testing.

[martinhpedersen]

This simplifies the build process quite a bit, so remember to update the wiki pages after this has been merged to master.