added the remaining Gentoo package support files
fixed 11.uart_test sample for Ubuntu 13.04.....
fixed buildall script
fixed xbee1/13.lxb2lxb_client sample makefile
fixed type mismatch in xbee2/8.forced_io sample
implemented file locking on Linux, to prevent multiple applications accessing the same XBee
removed unnecessary (and wrong) cast
Merge branch 'master' into win32