Kernel/x86 - Fixed ACPICA shim possible null deref
Kernel/x86 - Removed conditional debug statement in MM_AllocPhys
Usermode/libc - Fixed DIV0 in fread/fopen
Tweaking root makefile
Usermode/cat - Fixed order of fread/fwrite params
Usermode/libc - Unit tests
Usermode/libc - Fixed compilation issues in printf