master
tests: port pipe-output and zgrep-signal to Cygwin
maint: update copyright dates
tests: add a test for just-fixed bug
tests/unpack-valid: port to printf that do not grok hex
tests: avoid two cygwin test failures
gzip: quote oddball file names in diagnostics
tests: use $GREP not grep
tests: test for the latest fix
tests: zgrep-abuse: skip if we cannot create the exploit input