ladspa-blop-0.2.8-bp156.3.4

- Run spec-cleaner
- Remove obsoleted autoreq/autoprov tags
- Patches carried from the original ladspa package:
  blop-automake-fix.dif
  blop-shlib.diff
  blop-ladspa_dir.diff
  blop-wdautil-fix.diff

- correct the license to GPL-2.0+

- Initial version 0.2.8: split from ladspa package