added Interval coercion tests
Merge branch 'master' of github.com:pgjdbc/pgjdbc
fix for setNull, setString, setObject may fail if a specified type cannot be transfered in a binary mode #151
Merge pull request #152 from davecramer/master

fix for setNull, setString, setObject may fail if a specified type canno...
Apply patch for failover documentation
Merge pull request #153 from pradtke/master

Apply patch for failover documentation

Thanks!
Merge pull request #154 from alexismeneses/master

Implementation of most Jdbc4 methods