Add missing OID types from Postgres 9.6
Add missing OID types from Postgres 9.6

Several new OID types were added since the last time types.go was
updated. This commit adds the missing types as of Postgres 9.6.2.

ympons/pq,jnewmano/pq,bugreplaydev/pq,ympons/pq,lib/pq,bugreplaydev/pq,VividCortex/pq,jnewmano/pq