Bug 625015 - Improve the error message when the X development libraries are not available; r=glandium

Patch based on the one of Aikeremu Tiemuer
Bug 845057 - Part 1: Use DOMSettableTokenList for iframe.sandbox; r=bz
Bug 845057 - Part 2: Tests (sanity checking sandbox DOMSettableTokenList attribute); r=bz
Bug 845057 - Part 3: Use the parsed attribute in ParseSandboxAttributeToFlags; r=bz
Bug 882703 - Add TextTrackList change event; r=rillian,bz
Bug 909914 - Add a missing include to avoid error: "Use of undeclared identifier 'getpid'" when building with enable-macos-target=10.9; r=smichaud
Bug 913665 - Detect minified files and pretty print them by default; r=fitzgen
Bug 921484 - Fix bugs found in TextTrack::GetActiveCues(); r=rillian
* mDirty needs to be set to false after the list has been recomputed.
* The loop that adds cues to the list doesn't work properly when the
  list has become dirty as we check if endTime < playback time and
  since we start from pos 0 we will never get past the first cue.
Bug 935987 - Part 1: Give the preprocessor a better API; r=gps
Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/43b863a8cf4d
Author: Fabien Cazenave <fabien@mozilla.com>
Desc: Merge pull request #14924 from TheoChevalier/Bug952836-curvy-single-quote

Bug 952836 - [Gaia][l10n][en-US] Typography consistency, r=kaze

========

https://hg.mozilla.org/integration/gaia-central/rev/3b76d09c72e0
Author: TheoChevalier <theo.chevalier11@gmail.com>
Desc: Bug 952836 - [Gaia][l10n][en-US] Typography consistency: curly single quote ’ vs. straight single quote '
Bumping gaia.json for 1 gaia-central revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/d8a08a3e15f3
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 952533 - [Messages] The contact lookup fails in some situation r=rwaldron

* Bail out early if the current contact does not have the wanted field
Bug 918880 - MaybeAllowOfflineAppByDefault must work on child processes, r=jduell
(no bug) Convert DOS line endings to UNIX line endings, in reftest files 690643-1*. (test-only, whitespace-only, DONTBUILD)
Bug 952857: Fix some typos in reftests that cause JavaScript errors in output. (test-only, no review)
Bug 950564 part.2 Fix complex text input panel width as focused plugin width if it's not too narrow r=smichaud
Merge mozilla-central to mozilla-inbound
Bug 951993 - Fix undefined mMode when called from file input in HTML form. r=baku
Bug 939775 - Remove UpdateTextFragmentTrees and nsSVGMutationObserver. r=dholbert
Bug 944908 - Fixed mingw compilation in gfx/2d/. r=bas.schouten
Bug 936056.  Be consistent about the thisobj we pass to getters.  r=jorendorff