patches even if one fail.
This helps when upgrading ports with a large number of patches, like
www/chromium where having to fix one patch, re-do the patching, fix the
fallout, 800 times, is really painful.
This fixes the first attempt at this which would make ports with
multiple patches patching one file somewhat explode.
This makes the process of make patch, fix fallout, make makepatch much
easier as only one iteration is required.
While there, refactor things around, and streamline messages passed
between functions.
PR: 244626
Reported by: cem
