When accepting a self-signed certificate, the SVN credentials weren't

being passed. This could result in a breakage for installs that blocked

anonymous access.
accept_certificate() is now set up to take the credentials, which the

form passes. Those are then passed to build_client for SVNTool.
This fixed some issues I was able to hit with adding repositories with a

self-signed cert and that required authentication.
While here, I also fixed a missing space between two sentences in an

error message that I came across when setting up an environment for

this.

Accepted a self-signed cert and saw it immediately add the repository,

passing a username and password.
Prior to this, with the configuration I created, I would see it fail on

occasion after attempting to connect again after the read-only attempt.

I don't know if this was some bug or some connection limiting on my SVN

server, but this solved it, and is more correct anyway.