libconfig: new package
zeromq: Add libsodium dependency

As per http://stackoverflow.com/questions/27400216/building-libzmq-with-libsodium
libjpeg-turbo: Remove unneeded patches. Apply header compatibility patch.
lcms2: Add LRN's patches for comatibility with libjpeg-turbo.
lcms: Add patch for compatibility with libjpeg-turbo headers from LRN.
libconfig: Format PKGBUILD.
gdb: Rebuild for gcc-4.9.2
python2: Update to 2.7.9