added zzuf.sh, a script to test the hgl toolchain
it runs zzuf on the example.hgl, tries to compile it if the compiler accepts it, it is passed to the interpreter to see if the interpreter has problems with it
This way a lot of corrupt output produced by the compiler can get detected
Authored by: heiko 2013-05-14
Parent: [r1189]
Child: [r1191]
