updated HISTORY
fixed I/O parsing for xbee2 and xbeeZB... can now access VCC at the correct location
'clean' compile for OSX
disabled c++ interface on OSX for now
improved the frame handling a bit
adjusted sample makefile for OSX
improved serial port setup and purge
fixed tabbing in xsys_linux.c
fixed tabbing in xsys_darwin.c
fixed serial I/O on OSX!
updated sample for use on OSX - use /dev/cu.*
added DEBUG_TX_FULL so that you can see the entire frame that is transmitted (start, length and checksum too)
reversed clock_gettime() -> xsys_clock_gettime() changes
Merge branch 'osx'

OSX support is now 'working'
  - you may need to increase your file limit using the following command:
    - ulimit -n 1024
  - the C++ interface isn't being compiled at the moment
updated HISTORY to reflect OSX support
added a stress-test app
fixed 100% cpu usage in stress test app
fixed tabbing in apps/stress_test/a/main.c
removed EXPORT from _xbee_convxTx()
fixed typo in HISTORY