* Manpage examples turned into tests
  Convert most examples from xorriso(1) manpage into tests.

* Enhance 'auto_isocontent'
  Extend it to use some more demanding directory tree.
  MD5s should be checked.
  All file types as of stat(2) should be tested.
  Test various comparisons:
  xorriso provides built-in means for comparison: 
  xorriso -compare_r disk_path iso_rr_path
  xorriso -indev my.iso -find /   vs. find input_dir
  bsdtar -xf my.iso               vs. input_dir

* Test for wrong CD sizes would need a new test and probably an
  automatic CD changer.

* Library unit tests - investigate the possibility to write some
  cunit-based tests (http://cunit.sourceforge.net) for both
  xorriso.h and libisoburn.h API's. The code samples could be put into
  codesamples/ directory and run by auto_cxx or a separate auto_ script.

* ??? Still to decide:
  Delete debian-testing-i386-businesscard.iso with ./run_all_auto -c

* ??? Still to decide:
  Have a script ./run_all_manual

* derive a GNU xorriso test suite from libisoburn test suite

* auto_ tests should know whether they work underneath run_all_auto
  or whether they run standalone