trying to fix 'warning: deprecated conversion from string constant',
resulted in forcing const correctness, maybe a bit overdone
encoding routine for REV 8342-BHC added; NULL issue fixed; still overloading issue
added switchOnBHC() and switchOffBHC(), not yet tested
example sendRevBHC for REV switched, type BHC
Added patch 5499294f2d from A.Link 'Implemented missing switch types in send command'
Makefile with some variables, pattern rules, ...
added a few DEBUG lines (optionally)
fixed warnings 'cos of -Wall