mail category: Remove $PTHREAD_LIBS
Note: The following ports did not pass check-plist (CP) or stage-qa (QA)
tests. The sendmail port has many problems, but this was already known
by myself as I fixed it properly on DPorts last week. It's a forward
action to submit a PR against mail/sendmail.
- antivirus-milter (CP)
- dk-milter (CP)
- milter-regex (CP)
- sendmail (CP, QA)
approved by: PTHREAD blanket