Updated x11 and x13 kernels

Updated x11 and x13 kernels to increase performance under 14.6 beta drivers. This update follows the changes seen here:

https://github.com/djm34/sph-sgminer_x11mod/commit/d2d9f300ec8cc5d9bc3db288f1141be22ecb5c4d

Allow corrected a few issues with the handling of default profiles and the config parser.