emacs: add launchd plist for server daemon.

Since emacs version 23.1 the emacs executable accepts a --daemon flag
which will start emacs as a server daemon. You can then connect to the
server using emacsclient (reducing startup time etc).
See http://www.emacswiki.org/emacs/EmacsAsDaemon#toc7
emacs: update 24.4 bottle.

Closes #33455.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
brew-test-bot: always base URL tests on master.
pig 0.13.0

Closes #33466.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
argp-standalone: update 1.3 bottle.
berkeley-db4: add 4.8.30 bottle.
boost-build: add 1.55.0 bottle.
confuse: add 2.7 bottle.
dialog: add 1.2-20130928 bottle.
docbook-xsl: update 1.78.1 bottle.
eina: add 1.7.9 bottle.
fltk: add 1.3.2_1 bottle.
freexl: update 1.0.0g bottle.
gdbm: update 1.11 bottle.
gpgme: update 1.4.3 bottle.
graphviz: update 2.38.0 bottle.
gtksourceview: add 2.10.5 bottle.
gupnp: add 0.20.12 bottle.
harfbuzz: update 0.9.35_1 bottle.
itstool: add 2.0.2 bottle.