ruby: Disable dtrace on Xcode-only
Added option to replace gzip

By specifying --replace-gzip at install, symlinks are created that will make pigz work instead of gzip and gunzip
Removed an erroneous file
ffmpeg: only apply -mdynamic-no-pic w/ 32bit clang

While this flag fixes 32-bit clang compilation of ffmpeg, it
actually breaks the build on 32-bit PPC with gcc-4.2.
jython devel 2.7b1

Closes #18556.

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

Closes #18545.