Added  support for Unit testing

Fixup makefile
Added LEDSet test

Conflicts:
	tests/ledset_test.cpp
Improve tests.. now making sure the cmd_usage is really called
Fixes to test lib

Conflicts:
	tests/ledset_test.cpp
Fixup verify so that it is used correctly
Fixup testlib for GPIONR
Added test for LedSet with args
Comprehensive tests of LED
Removed file that should not be there in the first place
Refactor.  Extracted LED set