- Small package modernization

- Fix sed call to fixup bear's shebang

- Packaging changes:
- Drop unnecessary BuildRequires libconfig-devel and pkgconfig
- Drop Bear-rpmlintrc: it contains a no longer required filter
- Run the testsuite in %check
- Add bash completion files
- Use python3 as the interpreter for /usr/bin/bear
- Update to 2.4.2
Features:
- Support output field in the output. (#254, @bofeng17)
- Support Fortran compiler (#201, #241, #253, @rubyzhou2014, @chunhualiao)
- Support filter options (#261, #252, @liugang)
Bugfixes:
- Fix Cpack problem to create RPM. (#191, @antmak, @reverendhomer)
- Update to 2.4.1
- Minor bug fixes.
- Update to 2.4.0
- Improve reliability by replacing flaky character conversion code in critical
execution path.