Added system to Fix File system and added options for check anda repair in every boot

Dorimanx i messed around in /sbin/init and i manage to include system partition check and repair on boot.

Check init to see if i didn't do something wrong, i just copy/paste data partition checks and replace by system partition.

I changed the location of /system/fix_fs_on_boot_auto to $EXTERNAL_STORAGE/.fix_fs_on_boot_auto, this way we can check system ;)

I have tested this since yesterday with Rootbox Unofficial 20130821 and is working fine, no issues at all.

Feel free to change whatever you want ;) :P 

All the best,

Computoncio