Allow libjpeg_turbo to configure (using gyp) on FreeBSD.

Allow both the built-in and system yasm on FreeBSD, and add (prefix_dir)/include to the include path.

Obtained from:	George Liaskos <geo.liaskos@gmail.com>

BUG=
R=phajdan.jr@chromium.org
TBR=cpu@chromium.org

Review URL: https://codereview.appspot.com/56740043

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/libjpeg_turbo@257324 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
1 file changed