- turn devel/py-twisted into a meta port.
- Update USE_TWISTED{,_BUILD,_RUN} in bsd.python.mk:
* Remove flow, pair, xish, which are deprecated
(but still update them to latest release in the tree)
* Remove USE_TWISTED=13 (no port uses this)
* Fix typos in twisted components _DEPENDS
PR: ports/130001
Submitted by: lwhsu
Approved by: maintainer timeout