Files never created in clientscript.php

[stever]

If you start with a clean assets folder, then run with debug off AND gzip off, then clientscripts will only create a xyz.js file then serve it. However, if you then remove the gzip=false, it trieds to load the xyz.js.gz file and serve it -- but it does not exist! The check to see if the file exists on line 536 only checks if the xyz.js file exists, not the gz file it will actually load.