Refactorring 01;
Refactorring 01: arm/*.c files clean.
Refactoring 03, exception/*c files clean.
Refactorring 04, init/*.c clean.
Refactorring, mm/*.c file clean.
Refactorring, commit files one by one.
Refactorring, strange problem happened again.
Refactorring, util/*.c files.
Free PIDs.