Merge remote-tracking branch 'origin/cmake-master-dev' into master

* origin/cmake-master-dev:
  Upgrade cmake to 3.10.2
  Update cmake (ab/4111459)
  Add cmake 3.8.2 for tests
  Update prebuilts to CMake 3.6.0-rc2 (go/ab/3043163).

Bug: 149853706
Change-Id: I570636a6ae3ca935925ac36aeef6a2b3dfcf0c82
tree: 1fc161100c29dae451f06ad52f40ccf1262318ce
  1. bin/
  2. doc/
  3. share/
  4. android.toolchain.cmake
  5. source.properties