Add --svn-prompt-password option

Review Request #7206 — Created April 15, 2015 and submitted — Latest diff uploaded

Information

RBTools
release-0.7.x
55d6902...

Reviewers

The --svn-prompt-password option will prompt the user for their SVN
password the first time an SVN command is run. This is useful so as the
--svn-password option will leave the user's password visible in plain
text on their console and in their history, which can be a security
concern on shared systems.

Successfully used the --svn-prompt-password option when using an SVN
repository with the remote repository over HTTP. The password was
prompted for and the command worked.