Added skeleton structure to switch statement in syscall.c
Added some system calls
Slightly fixed, but doesn't compile, weird parenthesis bug remains
finished implementing remaining trivial system calls
Moved function declarations in syscall.c to syscall.h

Re-implemented the write system call to meet all listed requirements
Fixed a few bugs with input string handling.

All exec and wait tests now pass.
fixed warnings and the memset bug
Merge branch 'proj4' of ssh://login.cms.caltech.edu/cs/courses/cs124/teams/pintos-gmt into proj4

Conflicts:
	src/userprog/syscall.c
Merge branch 'proj4' of ssh://login.cms.caltech.edu/cs/courses/cs124/teams/pintos-gmt into proj4

Conflicts:
	src/userprog/syscall.c
	src/userprog/syscall.h