Bumping gaia.json for 12 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/c6be5ea9890e
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #21174 from timdream/keyboard-modify-layout2

Bug 1023730 - Move modifyLayout() to layout_manager.js, r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/b6af0364b76a
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1023730 - (Part IV) Set imEngine name on modified layouts

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https://hg.mozilla.org/integration/gaia-central/rev/0c78c1a144ea
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1023730 - (Part VIII) Correct property naming for render.js

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https://hg.mozilla.org/integration/gaia-central/rev/6750d0c3bca4
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1023730 - (Part VII) Remove keyboardName and currentLayout from global

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https://hg.mozilla.org/integration/gaia-central/rev/e04d7d08fa26
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1023730 - (Part VI) Remove currentInputType from global

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https://hg.mozilla.org/integration/gaia-central/rev/989df65bffef
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1023730 - (Part V) Remove currentInputMode from global

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https://hg.mozilla.org/integration/gaia-central/rev/89a1cf60e95d
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1023730 - (Part IV) Remove layoutPage from global

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https://hg.mozilla.org/integration/gaia-central/rev/1b953bb0f52f
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1023730 - (Part III) Remove inputContext from global

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https://hg.mozilla.org/integration/gaia-central/rev/74664131dec3
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1023730 - (Part II) currentModifiedLayout in LayoutManager

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https://hg.mozilla.org/integration/gaia-central/rev/520d71f85ce5
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1023730 - (Part I) Move LayoutLoader to another script

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https://hg.mozilla.org/integration/gaia-central/rev/58f16dc22117
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #21193 from snowmantw/issue1027438

Bug 1027438 - [LockScreen][System] Change the old locking events with ne...

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https://hg.mozilla.org/integration/gaia-central/rev/75c208b48bab
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 1027438 - [LockScreen][System] Change the old locking events with new window events > remove something missed and fork the event
Bumping manifests a=b2g-bump