- Cleanup spec-file with spec-cleaner
- Use url for source
- Add gpg signature
- Get rid off _DATE_ and _TIME macros
- Update to 2.4.17
* fixing issue when case insensitive comparison was requested
and invalid wide char for the current local was met in a
filename. In such situation the corresponding file was never
saved before (considering a filesystem error for that file),
while now the ASCII case insensitivity is used as fallback.