[avr-gcc-list] stack size analysis

[John Regehr]

I've checked an AVR stack analysis tool into the TinyOS distribution, 
some documentation is available here:

  http://docs.tinyos.net/index.php/Stack_Analysis

Currently it supports just the mega128 and 1281.  Adding more chips is 
not difficult.

Eventually I hope to come up with a more generic version of this tool 
that can be distributed with avr-gcc.  At present it is for early 
adopters who don't mind perhaps hacking the script a bit.

John Regehr