Add getSCardConst function to access PCSC constant in a abstract way. Next scardJS may remove any other access way..
Fix  getPCSCBridge and add cache.
Fix reader retrieving. Now we first look up for a reader strictly starting with provided name, then we consider the provided name as a regexp.
Fix stupid parenthesis bug when testing current hCard handle in some functions
Fix constant retrieving... next release will only use the new getSCardConst  API