qt5: depends on Xcode at build-time

Closes #29503.
fix HTTP 422 when gist-logs sends an empty file

Closes #29476.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
pyexiv2 needs boost-python
libpst: remove commented-out code
libpst needs boost-python
libtorrent-rasterbar needs boost-python
libtorrent-rasterbar: always use Homebrew's openssl
Remove code that cannot possibly execute
Remove more code that cannot possibly execute

build.with? requires the option to be defined.
opengrm-ngram 1.2.1
gcc 4.8.3

Update to latest stable release.

Closes #29507.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gcc: update 4.8.3 bottle.
rtorrent: 0.9.4 no longer uses libsigc++

Closes #29515.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
hub 1.12.1

Closes #29514.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
media-info 0.7.69

Update to latest stable release, update homepage link, change single
quotes to double.

Closes #29509.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
fetch-crl 3.0.13

Closes #29520.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Replace last uses of :freetype and :fontconfig deps
guile: add 2.0.11 bottle.
guile: libtool is a runtime dep
yarp: correct URLs

Closes #29521.

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