[Submitting this patch on behalf of James Ausmus, who attached it to https://bugs.kde.org/show_bug.cgi?id=396535 and did not respond to a request to submit it here]
balooctl add includeFolders/excludeFolders was checking for parent
directories using a startsWith string match, so directories with the
same initial character would match - for example:
```
$ balooctl add excludeFolders t
$ balooctl add excludeFolders test
Parent folder /test/kde/baloo/t is already in the list of exclude folders
```
Fix this by appending a path separator to the path used for parent
checking.
BUG: 396535
FIXED-IN: 5.51