emacs: simplify ctags option
emacs: remove cruft from srgb option

Follow-up to d8d8430. The srgb patch was incorporated upstream.
emacs: remove autotools deps from cocoa build

These aren't needed, possibly since 16da1c70bf11ddcb281f2f8b99db5914d45a8245.
emacs: add comment
remove versions from autocomplete
remove ext from autocomplete
libpcl: update 1.12 bottle.
libpgm: update 5.2.122 bottle.
libpoker-eval: update 138.0 bottle.
libpqxx: update 4.0.1 bottle.
libpst: update 0.6.55_1 bottle.
libpuzzle: update 0.11 bottle.
libqglviewer: update 2.5.1 bottle.
libquicktime: update 1.2.4_1 bottle.
libqxt: update 0.6.2 bottle.
libopennet: add 0.9.9 bottle.
liboping: update 1.6.2 bottle.
arangodb: remove reference to nonexistent devel spec
gnu-cobol: put fails_with in stable block
libopendkim: update 2.9.2 bottle.