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
Bug 948889 - Move the inline script in aboutTabCrashed.xhtml into a separate file; r=ttaubert
Bug 775730 - Ensure AttributeWillChange is always paired with AttributeDidChange. r=dholbert
Merge m-c to inbound
Bug 940040 Pressing and releasing "Alt" should not open the File menu on Linux r=enndeakin
Bumping gaia.json for 3 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/e8fced101cb7
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #14944 from kumarrishav/issue-944284

Bug 944284 [UITEST] add dial number activity , styling issue fixed- bug ..., r=gasolin

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https://hg.mozilla.org/integration/gaia-central/rev/931a6be5195c
Author: kumarrishav <reactiverishav007@gmail.com>
Desc: identation issue removed

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https://hg.mozilla.org/integration/gaia-central/rev/21fc43d8336c
Author: kumarrishav <reactiverishav007@gmail.com>
Desc: Bug 944284 [UITEST] add dial number activity , styling issue fixed- bug fixed
Backed out changeset 84a3ca9be2eb (bug 940040) for linux bustage
Bug 775730 - Address missed review comments. r=dholbert
Bug 936790 - (gcc 4.5) Build error: "We don't want these libstdc++ symbols to be used" when building with --enable-stdcxx-compat and WebRTC, r=glandium
Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/efc3dda58bee
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Merge pull request #14937 from EverythingMe/948317-rocketbar-suggestions

Bug 952937 - Rocketbar: e.me Search Suggestions [r=kgrandon, ranbena]

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https://hg.mozilla.org/integration/gaia-central/rev/82f83604538d
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Bug 952937 - Rocketbar: e.me Search Suggestions [r=kgrandon,ranbena]
Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/af4a62b03e58
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Merge pull request #14962 from EverythingMe/946724-collections-unsupported-locale

Revert "Revert "Bug 946724 - [e.me] Collection suggestions for unsupport...

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https://hg.mozilla.org/integration/gaia-central/rev/9010f29c8db0
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Revert "Revert "Bug 946724 - [e.me] Collection suggestions for unsupported languages should show English suggestions [r=ranbena]""

This reverts commit 1afe3de31a8974d301c38bfb5aad4c87bead5319.
Bug 952878 - Eliminate shadow layer. r=kats