Reduce heap allocs 2 (#46)

* reduce heap allocations in tcp logging; omit use of AppendFloat which allocates a metric sh*tton

* debugheaplog: better heap statistic logging

* heap: use string for pcap.Frame.Protocol

* add potential to eliminate Flags.String heap alloc, remove incorrect HEAP comments

* add StackAsync.DebugErr and httpraw.SetBytes

* many heap alloc reductions and replacement of bytes.Equal with internal.BytesEqual

internet/definitions_tinygo.go

@@ -21,6 +21,7 @@ func (s *cbnode) Encapsulate(carrierData []byte, offsetToIP, offsetToFrame int)
 }
 
 func (s *cbnode) Demux(carrierData []byte, frameOffset int) error {
+	debugLog("cbnode:pre-demux")
 	return s._demux(carrierData, frameOffset)
 }