x265 1.2

Closes #30785.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
x265: update 1.2 bottle.
dart 1.5.3

Closes #30788.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
youtube-dl 2014.07.10
youtube-dl: update 2014.07.10 bottle.