Makefiles edited to support building on platforms other than Windows.


These changes are necessary to get NORway.hex to compile Multi-Plaform.
Here's my terminal window after running the 2 Makefiles:
https://gist.github.com/dreamcat4/5177525


AVR_APP_PATH
==============

* If avr-gcc executable isn't in your $PATH environment variable.
  - Then 'make' command may result in a 'file not found' a compile error.

* Set the environment variable "AVR_APP_PATH". Including the slash at the end.
  - Point to the folder containing the 'avr-gcc' or 'avr-gcc.exe' compiler.
  - eg: export AVR_APP_PATH="/path/to/avrtools/bin/" <--- Trailing slash

* Makefile doesn't care about forward slashes or backslashes BUT:
  - AVR_APP_PATH must include it's own trailing slash (whichever kind it is).
  - Otherwise 'make' command may result in a 'file not found' a compile error.

* Possible places that AVR_APP_PATH might be added to:
  - May already be defined in the AVR Studio Environemnt somewhere.
  - Visual Studio Project Settings - Environment Variables.
  - "Environment Variables" in "My Computer" Properties / Dialog Box

* Otherwise just manually uncomment & set AVR_APP_PATH in the Makefile.