Merge pull request #12 from szilardhuber/master

Build and send query object to Data Service and receive response data.
Merge pull request #13 from szilardhuber/master

Fixed submodule URL to HTTP.
picking up changes from upstream
Merge pull request #14 from dbeck/master

picking up changes from upstream
make jenkins happy
Merge pull request #15 from dbeck/master

make jenkins happy
Breaking build to test CI notifications.
Fixing build.
FDW is no able to receive data in chunks.
Merge branch 'master' of github.com:szilardhuber/virtdb-fdw