PostGreSQL 10 support

[mrjavascript]

I tried out generating entities with pgsql 10 and received the following exception (I can roll back to 9.6 in the meantime):

org.postgresql.util.PSQLException: ERROR: column t1.tgconstrname does not exist
Position: 113
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2103)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1836)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:512)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:374)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:254)
at org.postgresql.jdbc2.AbstractJdbc2DatabaseMetaData.getImportedExportedKeys(AbstractJdbc2DatabaseMetaData.java:3477)
at org.postgresql.jdbc2.AbstractJdbc2DatabaseMetaData.getImportedKeys(AbstractJdbc2DatabaseMetaData.java:3670)
at com.github.wwadge.hbnpojogen.SyncUtils.getCommitOrder(SyncUtils.java:229)
at com.github.wwadge.hbnpojogen.SyncUtils.getCommitOrder(SyncUtils.java:507)
at com.github.wwadge.hbnpojogen.HbnPojoGen.sync(HbnPojoGen.java:168)
at com.github.wwadge.hbnpojogen.HbnPojoGen.run(HbnPojoGen.java:448)
at com.github.wwadge.hbnpojogen.HbnPojoGen.main(HbnPojoGen.java:481)

[wwadge]

This is a driver issue