Bumping gaia.json for 5 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/938ee7e95e8e
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1040621 - merge pull request #29518 from timdream:layout-lang to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/1076a4cf1ebb
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1040621 - Follow up, update layouts.json output reference

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https://hg.mozilla.org/integration/gaia-central/rev/da373c64f7ca
Author: Anindya Pandey <anindyapandey@gmail.com>
Desc: Bug 1040621 - Set lang attribute to the layout containing div r=timdream

Bug 1040621 - Set lang attribute to the layout containing div(2) r=timdream

Bug 1040621 - Set lang attribute to the layout containing div r=timdream(3)

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https://hg.mozilla.org/integration/gaia-central/rev/5983493a8d6b
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1151843 - merge pull request #29382 from azasypkin:bug-1151843-notification-data to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/f0b18f287dc1
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1151843 - [Messages][Refactoring] Use notification "data" attribute instead of icon URL query string parameters. r=julien

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "5fdd44defc31ff93b2b0bc932565410856e063ff", 
+        "git_revision": "d893775df85326e555f2f2b7aa102054979b3616", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "84fa3d8b1e284ad08fc27558824329c31b06d5d3", 
+    "revision": "938ee7e95e8e6530040a187fd3fb199022300075", 
     "repo_path": "integration/gaia-central"
 }