Merge pull request #123 from GottfriedSp/master

some changes
Remove use of #ifdef REVG; key issue is whether or not INTERFACE_POWER is defined
Remove pointless use of #ifdef REVG
More build system cleanup
Put -DALTERNATE_UART on all 2560 builds
Remove unused scripts
More build system cleanup
Remove need to define MODEL_REPLICATOR or MODEL_REPLICATOR2.  That information is implied by which board directory gets used and should just be part of Configuration.hh or a smaller Model.hh file included by Configuration.hh
Work on build system
Markdown version of readme with build info
Merge remote-tracking branch 'upstream/master'