use ifd handler api v3.0 only.

port for connection may be specified in the device name
avoid uninitialized variable
implemented reversed connection establishment

vpcd can now be configured connect to a previously started vpicc.
implemented my own version of libpcsclite

Allows customizing of the default adress to which vpcd or libpcsclite
connect to.

My libpcsclite is currently not thread safe. It should not be installed
together with PCSC-Lite since both packages have conflicting files. Use
./configure --enable-libpcsclite to use my version. Use ./configure
--enable-vpcdhost=ADRESS to define connection mode and adress of vpicc.
fixed handling of SW1=0x61 in handler_test
use a valid ATR for handler_test