CROND and CORTEX bug fixes.

*Moved cron and cortex to boot script load, so they getting high PID
and will not be terminated by kernel cleanup code.
*Improved CRON start/load logic.
no need to restart it if it's working.
Fix MTP not set for G3 ROMS, one more BUG with that type of ROMS.

Thanks OptimusRs@xda for solution.
Merge remote-tracking branch 'origin/kitkat-ramdisk' into DO-KK