Don't create .dcrd willy-nilly.
Don't create .dcrd willy-nilly.

This interferes with the installer when it tries to detect if the
required .dirs already exist or not.

Debated with jrick and ay-p.

jrick/btcd,jcmincke/dcrd,jrick/btcd,decred/dcrd,jcmincke/dcrd,jrick/btcd,jrick/dcrd,jrick/dcrd,jcmincke/dcrd,decred/dcrd