Replace the use of the internal_report structure (for reports from
engines, MPV etc) with the Rose program interpreter.
SOM processing was reworked to use a new som_operation structure that is
embedded in the appropriate instructions.
Move report preconditions (bounds, exhaustion, etc) into program
instructions and use a more direct path to the user match callback than
the adaptor functions.
Report handling has been moved to new file src/report.h. Reporting from
EOD now uses the same instructions as normal report handling, rather
than its own.
Jump target tracking in rose_build_bytecode.cpp has been cleaned up.
