pkzip: Improve OMP scaling. It was hard-coded with a ceiling.
Drop broken custom hash functions in pkzip and TC. Closes #791.
Add missing hash functions (and/or use default ones). Closes #790.
EFS: Bugfix for iterations count. BAD BUG, possibly false
negatives. Shame on @kholia. Closes #563.
AC: Create a GNUMakefile alternative. The old stuff is still there
too. See #805.
Case fix for GNUmakefile. We had it as GNUMakefile.