Fixing compilation error on when building for ARM C/C++ compiler
Adding Makefile to build LPC18xx, LPC176x startups.
Merge pull request #446 from arstrube/fix_unused_parameters

Fix 'unused parameter' warnings
Merge pull request #445 from bortsov/armcc

Armcc
First attempt - not really much good yet
"Textbook" version - but exhibits the same problems.