pngcrush 1.7.56

Closes #18930.
Closes #18928.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
webp 0.3.0

Closes #18927.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
jenkins 1.509
ncdc 1.16.1

Closes #18933.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Document `brew deps --installed`
nginx 1.2.8

Closes #18937.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Rust 0.6.0

Closes #18940.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
crosstool-ng: fix caveats

Fixes the caveats output for people who chose a different install
prefix.

Closes #18942.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
use separate args in brew create