Skip LaunchInTerminalTestCase test on remote systems

[ki.stfu]

Summary

This ability was added by @jasonmolenda in r225748 but it was commented out because he hadn't test it.
I tested it on OS X and now we can enable it legally.

This change is made by @chying request.

test/functionalities/tty/TestTerminal.py

class LaunchInTerminalTestCase(TestBase):
     # added support for this.
     @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
 
 
     # If the test is being run under sudo, the spawned terminal won't retain that elevated
     # privilege so it can't open the socket to talk back to the test case
     @unittest2.skipUnless(os.geteuid() != 0, "test cannot be run as root")
 
-    # Do we need to disable this test if the testsuite is being run on a rmeote system?
+    # Do we need to disable this test if the testsuite is being run on a remote system?
     # This env var is only defined when the shell is running in a local mac terminal window
-    # @unittest2.skipUnless(os.environ.has_key('TERM_PROGRAM'), "test must be run on local system")
+    @unittest2.skipUnless(os.environ.has_key('TERM_PROGRAM'), "test must be run on local system")
 
     def test_launch_in_terminal (self):
         exe = "/bin/ls"
         target = self.dbg.CreateTarget(exe)
         launch_info = lldb.SBLaunchInfo(["-lAF", "/tmp/"])
         launch_info.SetLaunchFlags(lldb.eLaunchFlagLaunchInTTY | lldb.eLaunchFlagCloseTTYOnExit)
         error = lldb.SBError()
         process = target.Launch (launch_info, error)