am 77070aa7: am ce7d5023: Turn dalvikvm host builds on by default when linux is the host OS.

Merge commit '77070aa757806d1617d707db4d2bd7931b2353fc'

* commit '77070aa757806d1617d707db4d2bd7931b2353fc':
  Turn dalvikvm host builds on by default when linux is the host OS.