added mmap vaddr check, added to makefile, changed test, fixed some vaddr checking
Merge branch 'reverted' into mmap-merged

Conflicts:
	src/threads/thread.c
	src/threads/thread.h
	src/vm/frame.h
	src/vm/swap.h
removed panicking on check
Merge branch 'mmap-merged' into matt-code

Conflicts:
	src/threads/thread.c
	src/vm/frame.c
	src/vm/swap.h
removed pinning, made frames carry threads, fixed swap freeing
cleaned up swap code a little
Moved around methods into sections
fixed race condition with syscall exit