modify tara.xml for gonk upgrade

Change-Id: I4a7716e5cd1f444bf17901e5309daff07dea4946
bug 862397 -- apply patches to Hamachi and Leo for each build
Merge pull request #69 from zhangye/master

modify tara.xml for gonk upgrade
Bug 831147 - Integrate apitrace into build

Add apitrace repo to manifest files, so that it gets fetched
when the top-level ./config.sh script is run.
Add peak port
Merge pull request #70 from vasild/master

Bug 831147 - Integrate apitrace into build
Back out apitrace on manifests that releng depends on
Bug 852583: switch emulator system/core and qemu-kernel to B2G github.

Change-Id: Ibc1989882c27f1fb790474e65ebb7333c93186ec