Merge pull request #56 from jsuchome/master

backportin forgotten changes (bnc#831872)
Merge pull request #57 from jsuchome/master

- correctly write supporturl (port of bnc#520169)
Merge pull request #58 from jsuchome/master

- remove trang from BuildRequires: rng can be created during
Makefile.am - comment why control.rng is in EXTRA_DIST

- additionaly agregate all XML files and call `xmllint` just once
Merge pull request #59 from yast/trang_comment

Makefile.am - comment why control.rng is in EXTRA_DIST
control/Makefile.am - enhancements

- process the current directory first to ensure `control.rng` file is generated
  before it is used in the `examples` subdirectory (fixes `make check` failure
  when the RNG file does not exist yet)

- `make check` target:
  - removed duplicated `trang` command, create the RNG file via dependency
  - filter XML files from `$(control_DATA)` instead of hardcoding `control.xml` file
Merge pull request #60 from yast/makefile_rng_enhancements

control/Makefile.am - enhancements
Cleanup

- removed empty `agents/Makefile.am` and unused `testsuite/Makefile.am`
- removed obsolete BuildRequires:
    - doxygen
    - perl-XML-Writer
    - sgml-skel
    - yast2-testsuite
    - yast2-storage
    - yast2-pkg-bindings
    - yast2-packager
Merge pull request #61 from yast/cleanup

Cleanup
- check the product profiles during system analysis and
  copy them to installed system (backport of fate#310730)
- 3.0.2