New version of pcsc-lite: 1.8.23

I just released a new version of pcsc-lite 1.8.23.
pcsc-lite is a Free Software implementation of the PC/SC (or WinSCard) API for Unix systems.

Changes:
1.8.23: Ludovic Rousseau
18 December 2017

• use libsystemd instead sd-daemon.{c,h}
• install_spy.sh: add support of Ubuntu
• spy: add support SCardStatus() with NULL pcbAtrLen
• Some other minor improvements