Disable SSL when connecting over a UNIX domain socket
Disable SSL when connecting over a UNIX domain socket

Previously if sslmode was not explicitly disabled, trying to connect
over a UNIX domain socket would result in a "pq: SSL is not enabled on
the server" error.  This is both silly and incompatible with libpq.  Fix
by setting "sslmode" to "disable" automatically whenever a connection is
made over a UNIX socket.

VividCortex/pq,lib/pq,calebthompson/pq,stvp/pq,ScriptRock/pq,jnewmano/pq,sammi/pq,bugreplaydev/pq,beni55/pq,erichnascimento/pq,henrylee2cn/pq,StabbyCutyou/pq,springning/pq,amaniak/pq,everalbum/pq,ympons/pq,jnewmano/pq,cbandy/go-pq,bugreplaydev/pq,dongzerun/pq,ympons/pq,johto/pq