tower, tower-freertos, ivory-freertos-wrapper: start of big code reorg
ivory-freertos-bindings: single cabal package just for importing OS
delete tower-reporting and tower-frontend: obsolete packages
delete tower-aadl: totally obsolete and broken

will need to create an aadl platform for tower 9, will grab
whatever was reusable out of history when we do that, but given
the major aadl syntax and tower semantic changes, i bet it'll basically
be a fresh rewrite...
tower: package rearranged, exposes modular platform compilation
tower-freertos: fixups, add cabal file
tower-examples: update cabal dependencies (does not build yet)
wibble