Bug 830948, null check mDocshell before using it, r=bz

--HG--
extra : rebase_source : ea20dabe0ec39b3b98fab07e72b0f1f51f9d32a8
Bug 830893 - Remember private state for zombified tabs. r=mfinkle
Merge m-c to inbound.
Bug 817153 - AltiVec acceleration for qcms. r=jmuizelaar
Bug 829451 - Change the Firefox OS version to 1.0.0.0 (4 digits). r=fabrice
Bug 829832 - Move nss and sqlite builds before netwerk. r=mh
Bug 830540 - Update about:privatebrowsing mask image. r=mfinkle

--HG--
extra : rebase_source : 3852fb20c675e2ad17c376393b9e59843b02eb91
Bug 828480 - Add null check for mSuggestionsOptInPrompt. r=mfinkle
Bug 773944 - Check view tag's type before casting to viewholder. r=mfinkle
Bug 822041 - Temporary diagnostic for tracking down intermittent failures in JS profiling. r=jorendorff

--HG--
extra : rebase_source : e3465205c2f862654155243f71604c6ba29498c3
Bug 830600 - Improve the performance of pasting into the location bar by rewriting the O(n^2) algorithm used there to be O(n); r=roc
Bug 827691 - Treat [stack:nnnn] entries in /proc/self/maps as anonymous memory.  r=jlebar.

--HG--
extra : rebase_source : bfe5db77f0a4329a6cafeecfdb9b9de605f53bc5