[tbb-dev] Changes to plist on Mac may affect disk leakage

[Tom Ritter]

spohl (cc-ed) let me know that he's going to be reverting
https://bugzilla.mozilla.org/show_bug.cgi?id=967970 and landing
https://bugzilla.mozilla.org/show_bug.cgi?id=1405577 to address issues
like https://bugzilla.mozilla.org/show_bug.cgi?id=1418903

In particular, reverting the first issue prevent window title disk
leaks, but the new patch should still address that need.

-tom