[Dev-luatex] zziplib building

[Arthur Reutenauer]

> If you know how to compile trunk on your platform, please have
> a go and see whether/how it works out for you.

  1. On Intel Mac the repository version #694 compiles fine.

  2. On Sparc Solaris there is not stdint.h, so one needs to undef
  ZZIP_HAVE_STDINT_H in _config.h (or rather leave it undefined). You
  might want to check for `uname -s` = SunOS in configure / Makefile.

	Arthur