pcre++: use opt prefix
watchman 2.8.2

Closes #21611.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
czmq: add HEAD option

Closes #21730.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
czmq: style nits
class-dump: remove skip-clean
cmus: remove skip_clean
znc: remove skip_clean