Absolute path detection and coping with spaces in paths.
Absolute path detection and coping with spaces in paths.

Fixed test for absolute test script paths.
Changed to the more robust array version of PTY.spawn to avoid problems
with spaces in paths and related quoting problems.

Banno/tuneup_js,Northern01/tuneup_js,MYOB-Technology/tuneup_js,songxiang321/ios-monkey,alexvollmer/tuneup_js,giginet/tuneup_js,songxiang321/ios-monkey,MYOB-Technology/tuneup_js,giginet/tuneup_js,misfitdavidl/tuneup_js,alexvollmer/tuneup_js,Banno/tuneup_js,Northern01/tuneup_js,misfitdavidl/tuneup_js