Mode 1742 - Fixed JGit exception when trying to generate the diff for a commit that has more than 2 parents

The problem described in the JIRA issue was caused by the fact that the connector was trying to perform the diff (and generate a patch) for a commit that had more than 2 parents, adding each parent in the tree walk which would create the diff.

There is no way (and it really doesn't make sense) to generate an n-way diff, so the solution was to only take the first parent into account and log a warning.

In addition, the _connectors_ module was included into the build.