allow nocompile flags in parser

Used for keeping the compiler from trying to analyze the word.
Can be used for interpretation only words.
fix stack effect of bitnot
comment out broken each
fix stack effect of `dsize`
fix ff code generation to include correct stack effects
ensure ff code is generated prior to analysis
ensure that compile log is written, even when error occured
per default, only words defined with ":" are compilable
make sure that even partial graphs are exported

that way, compilation problems can be spotted more easily