ArduinoCore-avr/bootloaders/optiboot/omake

echo ../../../tools/avr/bin/make OS=macosx ENV=arduino $*
../../../tools/avr/bin/make OS=macosx ENV=arduino $*
Makefile modification to allow building optiboot in more environments. Allows building within the Arduino Source tree, and within the Arduino IDE tree, as well as using CrossPack on Mac. Adds README.TXT to track arduino-specific changes (and documents the new build options.) This addresses Arduino issue: http://code.google.com/p/arduino/issues/detail?id=487 And optiboot issue http://code.google.com/p/optiboot/issues/detail?id=1 (which can be thought of as a subset of the Arduno issue.) Note that the binaries produced after these Makefile changes (using any of the compile environments) are identical to those produced by the crosspack-20100115 environment on a Mac. (cherry picked from commit 2d2ed324b48e709f59a002cb274ed60bb0ebc911) 2011-06-09 22:36:05 -07:00			`echo ../../../tools/avr/bin/make OS=macosx ENV=arduino $*`
			`../../../tools/avr/bin/make OS=macosx ENV=arduino $*`