AI 149272: Mark 1.5r1 as a "non-current" release, with pointer to 1.5r2.   BUG=1790234
AI 149272: Mark 1.5r1 as a "non-current" release, with pointer to 1.5r2.
  BUG=1790234

Automated import of CL 149272

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base