Because in some circumstances the crypto is skipped regardless of the
communication settings by the Mifare DESFire (e.g. when reading a file which is
writable with any key), do not abort if the crypto fail, and make it possible
to the user to catch such an event to fix his code accordingly.
Only display crypto diagnostic if compiled with debug support.
The autohell hack sucks and should be fixed, but I was unable to find the magic
trick to prevent automake from building broken libtool rules which produce
warnings about portability :-/.
After trying to tweak gindent so that it does not mess-up my ASCII art, give
and read the help of Vim to setup 'cinoptions' according to my needs
(cino=t0(0). This changeset reindent some bits that where not indented as they
should. A future commit will reindent the switch/case according to my (bad)
taste now that I have setup cindent correctly on my system (cino=t0(0:0).