Fix the build and install by moving the libNuoRemote.so link to nuodb.go

Tested with Go tip 16677:654eb0e0adf4 (pre 1.1)

go-nuodb$ make
go-nuodb$ go test
$ go install github.com/tilinna/go-nuodb
mygo$ go build src/example/example.go
mygo$ ldd ./example
libcnuodb.so => /home/.../src/github.com/tilinna/go-nuodb/libcnuodb.so
libNuoRemote.so => /opt/nuodb/lib64/libNuoRemote.so