This update for postgresql fixes the following issues:

- Fix the pg_server_requires macro on older rpm versions (SLE-12)
- Avoid a dependency on awk in postgresql-script.
- Move the dependency of llvmjit-devel on clang and llvm to the
  implementation packages where we can depend on the correct
  versions.
- Fix postgresql_has_llvm usage
- First round of changes to make it easier to build extensions for
  - add postgresql-llvmjit-devel subpackage:
    This package will pull in clang and llvm if the distro has a
    recent enough version, otherwise it will just pull
    postgresql-server-devel.
  - add postgresql macros to the postgresql-server-devel package
    those cover all the variables from pg_config and some macros
    to remove repitition from the spec files
- Bump version to 14. (bsc#1195680)