Added commandline parameters to tool scripts: rtscts, xonxoff, dsrdtr
RFD900: updates for PCB V1.2, power control PWM
RFD900: updates for PCB V1.2, power control PWM
RFD900: Calibration routines, PA temp update.

Squashed commit of the following:

commit 99ff56e2f39c0e3a5f26ce8233e0f32ecd63aeb3
Author: Seppo Saario <saario@rfdesign.com.au>
Date:   Mon Aug 6 23:05:32 2012 +1000

    RFD900: Updated MAX_PA_TEMPERATURE to 100 deg C for duty cycle limiting.
    This will allow full duty cycle to an approximate ambient temp of 85degC.

commit 64aff3035abd33c82cf9b72b6a61c01c4c4fa2c0
Author: Seppo Saario <saario@rfdesign.com.au>
Date:   Wed Jul 25 03:09:53 2012 +1000

    Updates for radio init timing

commit d4eab3a3165f1ad0d3659f3d1017243d0eccd9bc
Author: James Churchill <pelrun@gmail.com>
Date:   Tue Jul 24 17:12:55 2012 +1000

    Calibration now working

commit a0ef7ddd4d50cd207f9efba364a239ae23d22289
Author: James Churchill <pelrun@gmail.com>
Date:   Mon Jul 23 18:24:43 2012 +1000

    AT+L command now working

commit 35bbda2844ff4f0d36bde82187ef8ae1206d66e8
Author: James Churchill <pelrun@gmail.com>
Date:   Mon Jul 23 15:23:45 2012 +1000

    Fix AT parser problems and don't bother checking flash lock byte.

commit 2875c2dcb479f334d40530ab47799f2c0a618d96
Author: James Churchill <pelrun@gmail.com>
Date:   Fri Jul 20 22:50:22 2012 +1000

    Force calibration routines to use stack instead of pdata

commit 1adac0dd0dfeff29f62b6a132c61493db2ba5c91
Author: James Churchill <pelrun@gmail.com>
Date:   Fri Jul 20 22:30:30 2012 +1000

    Improved memory usage by a few bytes

commit 37899540be709ca6c640ec8841261125ae701818
Author: James Churchill <pelrun@gmail.com>
Date:   Fri Jul 20 22:03:18 2012 +1000

    Fix inconsistent header parameter names

commit 47e980f4590e0e29ea0de045460335cb6ce37517
Author: James Churchill <pelrun@gmail.com>
Date:   Fri Jul 20 21:46:00 2012 +1000

    Modify calibration prototypes to satisfy check_code

commit 6ea4896f82951e7f7ace7a0a052fe2f2b9fcd153
Author: James Churchill <pelrun@gmail.com>
Date:   Fri Jul 20 21:45:21 2012 +1000

    Remove unneeded globals to prevent XISEG overflow

commit 557ac8f0ecbdb146e5861e426326b85836e2551b
Author: James Churchill <pelrun@gmail.com>
Date:   Fri Jul 20 21:19:27 2012 +1000

    Fix wrong crc length issue

commit 6560757aa38121f31be62e9e8a0e66173ea942ff
Author: James Churchill <pelrun@gmail.com>
Date:   Fri Jul 20 21:14:39 2012 +1000

    Main code for rfd900 power calibration
added 470MHz and 868MHz register tables
fixed usage
Set preamble_length to 16 regardless of radio type
update version to 1.6
update URLs
patch from Mike for newer sdcc versions