Removes kmcomp.dpr, related source, compilekeymanweb.pas, and related
unit tests.
Cleans up a couple of bits and pieces around kmc in order to help tests
to pass, and updates some tests that had legacy code in them
(particularly missing &TARGETS stores).
The name json.hpp conflicts with the JSON for Modern C++ library that
is also used by Developer. Renames json.hpp and json.cpp to jsonpp.hpp
and jsonpp.cpp aka "JSON Pretty Printer".