log4cxx-0.10.0.svn20080724-bp153.1.16

- fix license to SPDX form

- Fix build with GCC6. gcc6.patch.
  https://issues.apache.org/jira/browse/LOGCXX-463

- Remove redundant sections (cf. specfile guidelines)

- Fixed building on openSUSE:Factory
- Cleaned up spec file formatting
- Moved to .changes file
- Added pkg-config buildrequires (fix for RMPLINT warning)
- Changed license naming to conform to SPDX convention (fix for RMPLINT warning)
- Fixed group (fix for RMPLINT warning)

- Fixed broken builds