Package rpm-static: Information

- Backported Disttag.
- psm.c: write installed/removed package buildtime to syslog.
- psm.c: write installed/removed package disttag if present to syslog.
- Add _allow_deps_with_beginning_dot macro to allow dependencies
  beginning with a dot character (such as ones generated by replaceDeps
  function) in spec file.

- rpm-build (backported from Sisyphus rpm-build):
  + backported support for SOURCE_DATE_EPOCH environment variable
  + backported device and inode numbers remaping
  + backported upgradeInterdep function
  + backported support for $RPM_ADD_CHANGELOG_{NAME,TEXT,TIME} environment variables

- backport from p7