bringing the build script up to date
bringing the build script up to date

Gradle 1.0-m3 or m4 deprecated some sourceSet methods that were used
in our buildscript. Those are now replaced with currently supported ones.

jvoegele/gradle-android-plugin,t3t5u/gradle-android-plugin,jvoegele/gradle-android-plugin,t3t5u/gradle-android-plugin