Merge pull request #3 from frankmorgner/hu-master

more changes
send description to reader
fixed incrementing void pointer
more error handling
fixed closing an already closed connection
removed useless printf
use an abstract user interface

UI has to implement nPAeIdUserInteractionCallback_ui and
nPAeIdProtocolStateCallback_ui, currently available as CLI
including eidui_cli.h
Handle deactivated PIN
Hack: Add detailed Errormessage to PACEException for deactivated PIN
fixed compilation with gcc
fixed parsing of cvca link certificate