Description of problem:
The "Inspect Element" item in the context menu does nothing at all in Fedora builds of Firefox 10.

Version-Release number of selected component (if applicable):
firefox-10.0-1.fc16.x86_64

How reproducible:
Always.

Steps to Reproduce:
1. Right click anywhere on a page.
2. Select "Inspect Element (Q)"
  
Actual results:
Nothing appears to happen, a file not found error appears in the Error Console.

Additional info:

This is the result of upstream bug https://bugzilla.mozilla.org/show_bug.cgi?id=703633 -- the TreePanel JSM mistakenly attempts to import resource:///modules/Services.jsm instead of resource://gre/modules/Services.jsm
-- resource://gre/ URLs are in the xulrunner omni.jar while resource:/// URLs are in the firefox omni.jar. Because upstream Firefox builds don't have the firefox/xulrunner separation, there's only one omni.jar and the load succeeds, but the Fedora build ends up looking in the wrong omni.jar and the load fails, rendering the Inspector feature unusable.