Remove use of LOCAL_BUILD_HOST_DEX.

Use BUILD_HOST_DALVIK_JAVA_LIBRARY instead.

(cherry picked from commit 2825e4971f37b082bcd487e0da53f97855582e97)

Change-Id: I767c1ee2da9513c11b76eb0ccacf6b94de6328ee
Merge "Remove use of LOCAL_BUILD_HOST_DEX."
Merge branch 'master' into vanir