lang/python27: Update to 2.7.8

The FreeBSD Python team welcomes Python 2.7.8 to the Ports tree!

Announcement: https://www.python.org/download/releases/2.7.8/
Changelog:    http://hg.python.org/cpython/raw-file/v2.7.8/Misc/NEWS

- Update to 2.7.8, update pkg-plist
- OPTIONS: Reorder and sort alphabetically
- OPTIONS: Make POSIX SEM(aphores) a DEFAULT (Hi binary package users!)
- OPTIONS: Add better descriptions for UCS2 and UCS4
- OPTIONS: Use options helpers
- Remove patch-CVE-2014-1912: upstream, was backported
- Remove patch-issue20374: upstream, was backported
- Rename patch-Doc__library__fcntl.rst: underscore convention
- Rename patch-Modules__fcntlmodule.c: underscore convention
- Patch: setup.py: Remove ncurses overrides and return to upstream code
- Patch: setup.py: Add partial backport for ossaudio OS checks
- pkg-message: Remove warning for POSIX Semaphores. They are now in
  GENERIC for FreeBSD 8.x 9.x, 10.x and tested well upstream
- pkg-message: No longer needs substitutions, remove .in suffix and
  SUB_FILES
- Rework and simplify the platformX mechanism, update pkg-plist
  accordingly
- Add regression-test target
- Deprecate NOPORTDATA, remove pkg-plist entries with %%PORTDATA%%
- Replace bsd.{pre,post}.mk with bsd.port.options.mk

Based on original patch submitted by wen@ and worked on by lwhsu@,
thank you!

PR:             191405
PR:             178301
PR:             171246
Phabric:        D364
Reviewed by:    antoine, bapt, mat, mva, wg
- Update to 20140702.
- Pass maintainership to submitter.

PR:		191757
Submitted by:	Koichiro IWAO <meta+ports@vmeta.jp>
- Pass maintainership to submitter.
- Fix LICENSE, the port is actually MIT-licensed.

PR:		191856
Submitted by:	Koichiro IWAO <meta+ports@vmeta.jp>