Revert 4382 "Makes webrtc and libjingle build from the same gyp-..."
Revert 4382 "Makes webrtc and libjingle build from the same gyp-..."

Failures: breaks build bots. Will have to disable Android NDK build for libjingle. The TSAN issues are in webrtc which should be unaffected. Flakey? Here are the failing tests:
 http://chromegw/i/internal.client.webrtc/builders/Android%20NDK/builds/303 and http://chromegw/i/internal.client.webrtc/builders/Linux%20Tsan/builds/284

> Makes webrtc and libjingle build from the same gyp-file. Also, the libjingle and webrtc DEPS revisions were mismatching. This cl takes the most recent revision of mismatches. Also disables 64 bit Mac builds for libjingle
> 
> BUG=1932
> TESTED=git try
> R=andrew@webrtc.org, fischman@webrtc.org
> 
> Review URL: https://webrtc-codereview.appspot.com/1836004

TBR=henrike@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1834005

Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 5c280ecd5762494809cd5ade5e018bb867a01fc9

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