Revert "don't use /cache/dalvik-cache for now"

This reverts commit 467ed46e4b98f8d0b0d34d10e7aec36370b94450.

Change-Id: I1cbd841a7b5706ac73a0bf67878eb8966beb9223
Merge "Revert "don't use /cache/dalvik-cache for now"" into kitkat