removing unused executor from ApklibMojo
Merge pull request #291 from marchelo/removing-unused-executor

removing unused executor from ApklibMojo
Merge pull request #287 from marchelo/issue-446

Fixing issue 446: R.java for aar libraries doesn't generate in some cases
Fixing issue 446: R.java for aar libraries doesn't generate. step 3
Merge remote-tracking branch 'upstream/master' into issue-446