We hate it and we should tell people why.
Next step may be blocking it altogether.

When a formula is removed from core and installed let's tap it so users
can get updates without caring which tap we want to put things in.

This should allow us to migrate a lot of things to taps.

Closes Homebrew/homebrew#23760.

Closes Homebrew/homebrew#23757.

Closes Homebrew/homebrew#23758.

Closes Homebrew/homebrew#23791.

Closes Homebrew/homebrew#23768.

Ruby's OpenURI library is somewhat broken under 1.8 and chokes on
otherwise valid values of http(s)_proxy. Use curl to get the mirror list
instead.

Fixes Homebrew/homebrew#23708.

The name is pretty self explanatory, it unlinks all installed
applications found under `brew --prefix` from either `~/Applications` or
`/Applications`

Closes Homebrew/homebrew#22729.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Closes Homebrew/homebrew#23484.
Closes Homebrew/homebrew#23494.
Closes Homebrew/homebrew#23681.

Otherwise :mountainlion, :snowleopard in the history for CMake breaks 
bottle_filenames from versions for new CMake bottles.

Previously if a bottle had no checksum for a particular platform (i.e.
currently there are no Mavericks bottles) then it would generate a
different revision (and thus filename) to the rest of the bottles being
generated which meant bottles needed to be manually renamed.

Instead check the actual bottle object's checksums to make sure that
we've looked at the previous bottles for all platforms rather than just
the current one.

Fixes Homebrew/homebrew#23653.

Closes Homebrew/homebrew#23669.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

* Don't encode "-Qunused-arguments", as this is only supported in Clang
  and will break building when C/C++ compiler is switched during the
  process, e.g. building gcc. The warning is harmless without
  "-Werror".

* Add new ENV function for selecting stdlib for Clang.
  - The selection is no-op for non-system-clang compilers.
  - Both superenv and stdenv are handled.
* Add new HOMEBREW_CCCFG flag and ccwrapper handling.

* Add options and ENV method to specify building in C++11 mode.
  - Set C++ compiler flags to enable C++11 mode.
  - To add options to support C++11 mode, a formula can now use

      option :cxx11

    to provide "--c++11" option, and detect and enable C++11 support in
    install method using

      ENV.cxx11 if build.cxx11?

Closes Homebrew/homebrew#22453.

This allows us to track the actual stdlib in use, and prevents warnings
for bottles with no C++ code.

This moves stdlib tracking after the install completes, which allows
the tracking to have access to the actual stdlib in use.

This unfortunately means that builds can error out *after* a build,
resulting in wasted time; however, it reduces false positives, and the
overall user experience is still likely to be better this way.

Array#one? wasn't yet defined in Ruby 1.8.6. In this case the block form
isn't being used, so Array.length == 1 is a simple replacement.

Fixes mistydemeo/tigerbrew#123.

Fixes Homebrew/homebrew#23643.

Closes Homebrew/homebrew#23553.

Xcode-only setup is badly broken and will remain that way until fixed by
Apple. For many 10.9 issues this fixes things so let's tell the users.

This patch allows users to "opt out" of using the GitHub API altogether
by setting the HOMEBREW_NO_GITHUB_API environment variable. The
value of the environment variable does not matter (it can even be
empty!).

For Bash/ZSH: export HOMEBREW_NO_GITHUB_API=1

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

Add late survey submission.