remove dependency on module not in wheezy
install Debian dependencies from packages
fix boiler plate module path
use librfid-tool from /usr/local/bin (default install)
use librfid-tool from $PATH
read mifare cards
SmartX decode format
make to_hash top-level function

Readers can now return tag_type which can be RFID501 or SmartX to
notify other parts which module to use to decode tag content
redirect STDERR from librfid to /dev/null
use modified mifare-tool
correctly return tags for inventory
on error try to reset usb
don't have duplicate tags in invertory
use new to_hash

This allows code to decode both 15693 and 14443 cards
insert tag_type into hash
don't populate (fake) security for SmartX
query koha to find out borrower info from SmartX
added tag_type
added all RFID501 fields
invalidate tags after going through all reader

This allows correct enter/leave events if more than one reader is
connected to same computer