Issue #75: Fix 'unsupported fd type: TTY' error in pty.open()

Applying the fix described in issue #32 for a similar issue, which
replaces "new net.Socket()" with "new tty.ReadStream()"

Signed-off-by: Dan O'Donovan <dan@emutex.com>
Merge pull request #76 from Dan-Emutex/master

Issue #75: Fix 'unsupported fd type: TTY' error in pty.open()
Fix util.h resolution issue
Merge pull request #78 from Y--/master

"util.h" in node/src is already present in Node 0.10.28 at least
Merge commit '18238d37e2915b3ac97e4ae0d5cb3e33f76ac758' into update
fix process leaks in pty.js
Merge pull request #3 from codio/process_leaks

Process leaks