Fixed compiler errors for swap
attempted to change the loading procedure of executable in process.c
implemented lazy loading of executables
minor fixup
contain debug code. Trying to fix exec-mult
Need to get one user_prog working. Other than that finished removing the free_list function from the frame table
added supp check in sanitize buffer
need to fix stack-growth-sc. debug code is also saved
finished exception handling
got a skeleton version of mmap working. Sanitizes it and creates it. Not ready for swapping yet though. Also unmapping is not done yet.