Implement C_InitPIN, C_SetPIN, C_OpenSession, C_CloseSession, C_CloseAllSessions. Added callback to C_OpenSession. Added clearCreate/Destroy/Lock/Unlock-Mutex functions for clearing the global callback for mutexes. Cleared all mutex callback in END block. Added check for pLabel length in C_InitToken. Check that mutex callback are not undef in C_Initialize. Corrected the calling of mutex callbacks.