1: Checksyscalls takes in folder arguments(with or without trailing /) and goes recursively through all folders.
2: Modified the regular expressions so that open now does not match filestream member function like ifs.open("file").
3: Added sycalls ioctl, close and readlink to the list.
calcgrade fix
Merge pull request #444 from hundal78/cs100-2014fall

Checksyscalls improvements and calgrade fix
added lecture notes
made calcgrade work with github usernames
Merge remote-tracking branch 'upstream/cs100-2014fall' into cs100-2014fall