[Chapel Merge] Revert "Remove generated man pages on clean/cleana

Branch: refs/heads/master
Revision: 45f9805
Author: lydia-duncan
Log Message:

Merge pull request #16674 from lydia-duncan/stopClobberingTime

Revert “Remove generated man pages on clean/cleanall/clobber”
[reviewed by @ronawho]

This reverts commit 0b4a2c6.

It turns out that our module build relies on make clobber explicitly leaving
the man pages behind. We do think it’s reasonable for make clobber to remove
these files and expect the right thing to do is probably to make a special
clean up command for the module build to call that removes most things except
the built man pages. But we need to think about that a bit more, so just
revert this change for now.

Modified Files:
M Makefile
M man/Makefile

Compare: https://github.com/chapel-lang/chapel/compare/036527250bea...45f9805b1f25