When I want to select files in a SVN-controlled directory, for a commit in one revision, I switch to Flat View.
Then I can select all files belonging together, independent of their sub directory. (Is there an easier way ? )
In that Flat View I'd like to filter (hide) files named: entries and *.svn-base and *.pyc
By the way, if you turn on Prefs - Misc. - Advanced: flatview_folder_filters, you can then simply filter out the .svn (or _svn depending on your subversion config) folders themselves.
(With that enabled, any folder filtered out in flatview will be hidden, including everything below it. This confused a lot of people so filtering folders in flatview was disabled by default, but you can turn it on if you know what you're doing.)