flickrnet-3.5-bp156.3.1

- Change pkgconfig-file generation logic - protect it from being broken by OBS source_validators
- Add verification for assembly signature presence, and manually sign it before adding assembly to GAC, this should fix build with Mono 5.0.
- Alter %setup macro to create toplevel directory

- Updated to version 3.5
  + Subscription methods (push.*)
  + Photo Location Suggestion methods (photos.suggestions.*)
  + Group Discussion and Joining methods (groups.discuss.* etc)
  + Large raft of new unit tests to improve code coverage
  + Custom exceptions thrown based on errors returned from Flickr. All inherit from FlickrApiException so backwards compatible.
  + Fix in OAuth code to handle international character correctly.
  + Support for Large Square (150x150) and Small 320 urls.
  + Update to ParseDateGranularity function so it checks string, rather than capturing exceptions.
  + Many more fixes and updates
- Removed assemblyinfo patch

- patch license to follow spdx.org standard

- Fix the license

- Updated to version 2.2:
  * Upstream provides no changelog

- Apply packaging guidelines (remove redundant/obsolete
  tags/sections from specfile, etc.)

- Initial package