New version of pcsc-lite: 1.8.19

I just released a new version of pcsc-lite 1.8.19.
pcsc-lite is a Free Software implementation of the PC/SC (or WinSCard) API for Unix systems.

Changes:
1.8.19: Ludovic Rousseau
9 December 2016

• SCardGetStatusChange(): Fix a (rare) race condition
• Doxygen:
• SCardGetStatusChange() may return SCARD_E_UNKNOWN_READER
• SCardConnect() and SCardReconnect() will never return SCARD_E_NOT_READY
• pcsc-spy:
• fix display of execution time
• log the thread number in the results
• Some other minor improvements