uFR lib version 4.0.8

* BUGFIX : Reader Open error with error UFR_COMMUNICATION_BRAKE on serial port
* ReaderOpenExHnd(), after opening the communication port and wait for firmware start,
try several times to get reader HW version

* BUGFIX : serial port stay blocked on Linux/OSX if some error occurred while changing port configuration
> fixed in rs232_serial_port_init() : close() port if error occurred