empty commit
First attempt at hw2.
Fixed stuff I forgot last night.

  Added bookkeeping to should_fail
  Added code to fork.c to set fail_num and num_sys_calls to zero on a copy.
Merge branch 'master' of https://github.com/bfish713/w4118_hw2
Fixed some small bugs and added new file to Makefile. Compiles now.
Fixed some bugs. Code compiles and tested on device. Passes test from assignment.