remove line about tagging
transferred compiled word information into own object
agenda update: maybe change implementation of call and execute

would be nice to get rid of memory range checks, which in turn allows
truly architecture-independent byte code
better local var naming
add primitive? check to definition objects
several compiler fixes

using compiled definition objects now for dictionary generation
some more verbosity
testing new features
actually including byte compiler code in toplevel image
moved doc of parse item types to parser.mfactor
comments were still defined in math vocab, fixed
updated stack-effect of search primitive
fix dictionary generation for primitives

in the process, cell_width can be used to query the current size in bytes
add instruction set enum generation
on-demand bytecode generation, actual c code output for byte code image
updated test task
set dict entry flags of primitives to 2
fix def error
update rake task to use new compiler

NOTE: no integration of ffi yet