Update pjsua.h

Changed values for more connections
define PJSUA_ACC_MAX_PROXIES    1000
define PJSUA_MAX_ACC	    1000
define PJSUA_MAX_CALLS	    1000
define PJSUA_MAX_VID_WINS	    32
define PJSUA_MAX_CONF_PORTS		1000
define PJSUA_MAX_PLAYERS		1000
define PJSUA_MAX_RECORDERS		32