* 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. ACLs and xattr (if we are on Linux).
  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.

* Burning tests - maybe a new 'manual_burning' test?
  Further if we want to have a burn test (with MD5 and checkreading)
  then we will need configuration means to enable this. By default
  it should not risk to burn one-time media which sit in the drive
  by mere accident.

* 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.