python-libsass-0.12.3-bp151.3.1

- Update to version 0.12.3
  Drop now useless patch: 89d03d50-allow-t-for-style.patch

- Add conflicts: sassc

- Drop redundant %clean section. Replace old $RPM shell vars
  by macros.

- Include egg-info to fix build

- 0.10.0 Release
- Use -t for style like ruby sassc
  89d03d50-allow-t-for-style.patch