Replace = with ==

This was my mistake; I didn't test it thoroughly. It results in all g2 mappings being broken!
Merge pull request #143 from mikeage/g2_import

Replace = with ==
Automated update of .build_number to 342 for branch master
Last update: 4fc539651685d0c0b540c88f2a64e8ffe1f69646 (1 commits ago)
Merge remote-tracking branch 'upstream/master'