add `length`for sequences
more c call primitives: _b and _is

need to implement a calling convention builder sometime...
rename dict-start to dictstart

for consistency
fixed `bitand` and `bitor` in primitives listing
added missing foreign function primitives
fix bytecode compiler after primitiva handling code changes
indent _wordsize for better readability
escape equal signs
better dot layout for function call nodes
fix phi node stack compatibility checking
fix stack effect for `or`
fix bug in _wordsize

accidentally detected by new compiler tests :(
clarify phi node stack checking
really fix mark protocol in MFStack
fix call node generation for words without inputs