docbook-dsssl-stylesheets-1.79-160000.2.2

- Replace old $RPM_* shell vars.

- Do not install in /var/lib; bsc#1093345.

- Rename README.SuSE to README.SUSE, adhering to the correct
  spelling.
- Add fdupes BuildRequires and eliminate duplictae files.

- remove two wrong dir modifiers in filelist

- license update: SUSE-XSL-Lint
  Choose a license from http://www.spdx.org/licenses or from the list
  linked at http://license.opensuse.org

- Remove redundant tags/sections from specfile
  (cf. packaging guidelines)

- provide Patch0

- Use %postun instead of %preun and check for the update case; reported
  by Marcus Meissner.

- converted neededforbuild to BuildRequires

- Package symlink.