fix1980 2.0

Fix an lha with timestamps of 1980

Short:        Fix an lha with timestamps of 1980
Author:       polluks+aminet@sdf.org (Stefan Haubenthal)
Uploader:     polluks+aminet sdf org (Stefan Haubenthal)
Type:         util/arc
Version:      2.0
Requires:     ARexx
Architecture: generic
URL:          https://en.wikipedia.org/wiki/LHA_(file_format)#Y2K11_bug

This script will fix broken archives made by buggy lha tools,
see https://www.google.com/search?q=site%3Aaminet.net+%22+1980%22

Command returned 0  -> ok or missing archive
Command returned 5  -> no fix required
Command returned 10 -> no tempfile
Command returned 20 -> working lha tool required

USE AT YOUR OWN RISK.

Changes
2.0 process spaces; preserve timestamp