catkin_prepare_release: adjust to svn 1.7+ when releasing subtrees of a repo

[130s]

Starting from version 1.7, which comes with Ubuntu Raring, svn stopped generating .svn files in all folders.
http://subversion.apache.org/docs/release-notes/1.7.html#wc-ng

With projects downloaded by svn 1.7+ where ROS packages are placed in the subfolders (the case already handled in #513), catkin_prepare_release fails as follows:

$ cd %ROSPKG_SRCDIR_TOP%
$ catkin_prepare_release 
Prepare the source repository for a release.
Could not determine repository type of '.'

[dirk-thomas]

If you are in the root of your working copy the command should work fine. None of the other VCS types allows you to invoke the command in a subfolder of the working copy.

This is only relevant if you are going to release a subtree of a SVN repository. Therefore I will mark this ticket with the milestone untargeted since it is not a feature the maintainers will work on. Please consider providing a patch if you want that use case to be supported.

[130s]

I'm fine with setting this untargetted. Just as a record, there are ROS svn repositories that place packages in sub folders. A few of them are listed here.

[dirk-thomas]

I just took a brief look to the referenced repos but none of them seems to contain catkin packages.

[130s]

Ah, you're right! Those repos were the last stronghold for us to stick to place packages in subfolders. Now I'll suggest my team to change our long-lasting repository structure to more common way.

You can close this ticket if that's better.

[dirk-thomas]

I will go ahead and close this ticket since there seems to be no interest in this feature.