Update cmake to 3.18

Change-Id: I85686d58031a4dd776a4119225d8fc92c77d45d1
tree: 1690c1e8215931fac370d9d981bbcaef21e7d14a
  1. bin/
  2. doc/
  3. share/
  4. android.toolchain.cmake
  5. source.properties