ruby-build: add autoconf and pkg-config deps.

When compiling ruby versions with ruby-build (and of course, rbenv)
from a brand new Mountain Lion (10.8.2) setup and no other formulas,
the build process fails by missing autoconf and pkg-config.

Tested with ruby v2.0.0-dev and v1.9.3-p385.

Thanks to Pierre Paridans.

Closes #18016.
hexedit 1.2.13

Closes #18449.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
EditorConfig 0.11.0

Closes #18448.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
denyhosts: 10.8 has no secure.log and logs sshd to system.log

Closes #18418.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Emacs 24.3

Closes #18391.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
doctor: mess with indentation
doctor: add check for coreutils in path
ice: fails with clang 425

Closes #18457.
mapnik: fix broken compile against cairo/cairomm after #17032

Fixes https://github.com/mapnik/mapnik/issues/1753

Closes #18458.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
gcutil 1.7.2

Closes #18460.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
vim 7.3.861

Closes #18461.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
mongodb devel 2.4.0-rc3

Closes #18459.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
autogen 5.17.2
dbus 1.6.8
dejagnu 1.5.1
texinfo 5.1
wdiff 1.2.1
git 1.8.2

Closes #18462.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
pstree 2.35
libffi: simplify test execution