scrypt-1.3.1-bp154.1.21

- use https for downloads
- add gpg verification
- update to 1.3.1:
  * see https://github.com/Tarsnap/scrypt/compare/1.3.0...1.3.1

- Update to version 1.3.0:
  * No upstream changelog available

- Update to version 1.2.1:
  * Unit tests are available

- Small spec file cleanups

- Update to 1.2.0
  * no upstream changelog provided
- Update license
- Cleanup spec file with spec-cleaner

- Disable SSE2 ugly hack, just provide a binary with SSE2
  always.

- fix build in i586, that doesnt enable sse2 :-(

- Initial package