add Heimdall

Change-Id: I2d0dbe3075a1758a7edf2e3d80d0a832a492c493
Add AOSP Review

Add review to AOSP in default.xml so that repo start & upload will
work correctly.

Change-Id: I3cd2e2c5316a87769213a760c97f46963b6189ce
Merge branch 'cm-10.1' of github.com:CyanogenMod/android into cm-10.1