[DO NOT MERGE] Compile using Jack

Declare target to allow compilation to Jack files.

This includes cherry-picks of the following changes:
83efd5e421870602f3da5c8fa82a606687bfcc27
491a3adb8de2f19fbeed86dd5331f970c3377d7b

Change-Id: Ia1bb627debb87c413ab2a184bd50d8510fd5cd45
1 file changed