neo4j 2.0.2

Upgrade to Neo4j 2.0.2

Closes #28416.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
logstalgia 1.0.5

Closes #28194.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
notmuch: require Homebrew emacs if emacs is requested

Closes #24802.
mit-scheme: non-optional X11 dep

Enabling this until someone can figure out how to disable X, if that's
even possible.

Fixes #28224.
Fixes #28411.
libopkele: add option for building docs

Closes #24790.
Remove dead constant
Document some unanswered questions in the Xcode module
Remove unnecessary xcode-select check

This is handled here:
https://github.com/Homebrew/homebrew/blob/67fbb313da8843234c4d1785c9c074af5a025394/Library/brew.rb#L34-46
Remove another unnecessary check
Don't call xcrun twice
Remove yet another xcode-select check
Xcode.bad_xcode_select_path? is used only once, so inline it
Fix syntax error
python: fix site-packages symlink

If the target exists and is a symlink to a directory, FileUtils.ln_sf
will follow the link and create the new symlink inside the target.

This results in a broken symlink like:
  /usr/local/lib/python2.7/site-packages/site-packages -> ../../../../../../../../../lib/python2.7/site-packages

Fix this by unlinking the target first.
Fix e97bbeb9a76578c46fa190884c1601b2713cddb0 for source installs
python: write distutils.cfg atomically
Merge branch 'master' of https://github.com/mxcl/homebrew