Prune LinkedKegs relative to correct path

Fixes #16948.
htop: fix build by creating empty m4 folder

Closes #14551.
Don't remove linked formulas when doing a 'cleanup'

Closes #16947.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
ode: add --enable-double-precision

Closes #13912.
lcov 0.10

Closes #16959.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
git: install zsh completion

Closes #16961.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
STK v4.4.4

Closes #16935.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
skktools: fixing compile error when CC=Clang

Closes #16937.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
zeroinstall-injector: remove formula

The software package was renamed to "0install", and it is easier
to install it with easy_install than to update the brew formula.
(but one can still use homebrew to install python, pygtk, gnupg)
There is also a binary package available, at http://0install.net

Closes #16828.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
owfs: adapted owfs for clang and mountain lion

Closes #16595.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
transmission 2.76

Closes #16962.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Cleaner: allow non-empty paths to be pruned from cleaning
glassfish 3.1.2.2

Closes #14744.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
riak: skip cleaning libexec
olsrd 0.6.4

Closes #16896.
Closes #15838.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Set userpaths before processing requirement ENV modifications
doctor: use -V for python version

`python --version` doesn't work in some (very) old versions of
python. While I doubt this is going to come up very often, it's
theoretically possible someone has an old python first in their
path. (python -V works on all versions I'm aware of, including
python3, and comes before --version in the --help anyway.)

Also skips the warning in case the regexp matches nothing, which
probably shouldn't happen. But if it does we shouldn't produce the
wrong warning.
Define Symbol#to_proc for Ruby 1.8.6

Ruby 1.8.6 doesn't have Symbol#to_proc, which allows things like
map(&:to_s) rather than map { |o| o.to_s }. 1.8.7 does, though, and
since it is used in a bunch of the superenv code we should attempt to
keep it compatible with 1.8.6.

Closes #16046.
mpssh: source download from github
PowerDNS Authoritative Server 3.1.

Closes #14627.

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