Unzip 6.0

UnZip 6.0 is the classic Info-ZIP extraction utility, ported natively
to AmigaOS4 PowerPC using ppc-amigaos-gcc and newlib.

This port extracts ZIP archives including support for:

- Deflate64 (PKZIP 4.x)
- Unicode/UTF-8 filenames
- Decryption (ZipCrypto)
- Symbolic links
- Timestamps
- Unshrink (PKZIP 1.x)

The port uses the Unix backend with AmigaOS4-specific stubs
for full newlib compatibility. No additional libraries required.

This release includes:

- unzip         - release binary (stripped, ppc-amigaos)
- unzip_debug   - debug binary (unstripped, for troubleshooting)
- Full patched source code for AmigaOS4/newlib
- All AmigaOS4-specific patches applied to the source:
    amiga/amiga.h         - LONG type, DIR type, SYSTEM_SPECIFIC_GLOBALS
    amiga/z-stat.h        - rewritten for __amigaos4__ / newlib
    amiga/amiga_os4_stubs.c - new file, AmigaOS4 newlib stubs
    amiga/amiga.c         - VersionDate fix
    unix/unxcfg.h         - SYSTEM_SPECIFIC_GLOBALS guard

Build environment:

- ppc-amigaos-gcc 11.5.0
- newlib
- AmigaOS4 SDK

Usage:
  
unzip archive.zip
  unzip -l archive.zip   (list contents)
  unzip -v               (version info)
  
Copy the binary to SYS:C/ for system-wide availability.

changelog:

6.0 - Initial native AmigaOS4 PowerPC port and bugfixes by Maijestro