Add efq support.
Merge pull request #2 from bendiy/master

Add efq support.
entityreference: Apply patch for d.o issue: 1576664.
Didn't mean to add the patch file.
entityreference: revet efq_ base_table change. We use entityreference_efq_views module for that now.
Merge pull request #3 from bendiy/xtuple

Apply fix for issue #1576664