Factor/To do/Static stack safety

done

• make with-datastack not use callcc
• call( and execute( should behave like call and execute if quotation or word is literal
• increment definition count when words are redefined
• execute(: its unsound with word redefinition, fix it
• errors on nth, etc should not break system
• the effect is set at word construction time!
• add SYNTAX:
• faster call( for static quotations: cache stack effect in quotation, curry, compose, together with a definition count
• make call( slow case use something faster than with-datastack
• make everything in core infer (just the parser now?)
• move call( and execute( into core
• remove assert-depth
• add inline cache for call(
• every word has a stack effect
• assert-depth should infer}]