vm: Elaborate comments for WITH_CLEANUP, other cosmetic fixes.
vm: Elaborate comments for WITH_CLEANUP, other cosmetic fixes.

ruffy91/micropython,ceramos/micropython,selste/micropython,mpalomer/micropython,deshipu/micropython,tralamazza/micropython,chrisdearman/micropython,emfcamp/micropython,bvernoux/micropython,redbear/micropython,ganshun666/micropython,HenrikSolver/micropython,infinnovation/micropython,tuc-osg/micropython,dxxb/micropython,kostyll/micropython,ruffy91/micropython,dxxb/micropython,kostyll/micropython,vitiral/micropython,mhoffma/micropython,warner83/micropython,feilongfl/micropython,kerneltask/micropython,alex-robbins/micropython,ryannathans/micropython,slzatz/micropython,aethaniel/micropython,lowRISC/micropython,mhoffma/micropython,ruffy91/micropython,aethaniel/micropython,mhoffma/micropython,MrSurly/micropython-esp32,dhylands/micropython,praemdonck/micropython,lbattraw/micropython,ganshun666/micropython,aethaniel/micropython,vitiral/micropython,xuxiaoxin/micropython,galenhz/micropython,galenhz/micropython,ericsnowcurrently/micropython,cloudformdesign/micropython,bvernoux/micropython,jmarcelino/pycom-micropython,warner83/micropython,cnoviello/micropython,ganshun666/micropython,mgyenik/micropython,swegener/micropython,orionrobots/micropython,xyb/micropython,ceramos/micropython,tobbad/micropython,ChuckM/micropython,adamkh/micropython,tralamazza/micropython,danicampora/micropython,EcmaXp/micropython,xhat/micropython,ernesto-g/micropython,blmorris/micropython,cwyark/micropython,bvernoux/micropython,redbear/micropython,adamkh/micropython,orionrobots/micropython,adafruit/micropython,pfalcon/micropython,Timmenem/micropython,bvernoux/micropython,slzatz/micropython,kerneltask/micropython,pozetroninc/micropython,noahwilliamsson/micropython,ryannathans/micropython,methoxid/micropystat,cnoviello/micropython,alex-robbins/micropython,dxxb/micropython,toolmacher/micropython,dmazzella/micropython,alex-march/micropython,tuc-osg/micropython,deshipu/micropython,slzatz/micropython,warner83/micropython,turbinenreiter/micropython,misterdanb/micropython,pramasoul/micropython,xyb/micropython,SHA2017-badge/micropython-esp32,suda/micropython,utopiaprince/micropython,swegener/micropython,MrSurly/micropython,pozetroninc/micropython,EcmaXp/micropython,aethaniel/micropython,skybird6672/micropython,jmarcelino/pycom-micropython,utopiaprince/micropython,Vogtinator/micropython,xyb/micropython,stonegithubs/micropython,matthewelse/micropython,ChuckM/micropython,turbinenreiter/micropython,vriera/micropython,feilongfl/micropython,neilh10/micropython,torwag/micropython,deshipu/micropython,SungEun-Steve-Kim/test-mp,Peetz0r/micropython-esp32,TDAbboud/micropython,dhylands/micropython,turbinenreiter/micropython,Timmenem/micropython,jmarcelino/pycom-micropython,tobbad/micropython,adamkh/micropython,dinau/micropython,ryannathans/micropython,pfalcon/micropython,oopy/micropython,stonegithubs/micropython,pfalcon/micropython,Peetz0r/micropython-esp32,dinau/micropython,ceramos/micropython,toolmacher/micropython,puuu/micropython,selste/micropython,mpalomer/micropython,jimkmc/micropython,pfalcon/micropython,chrisdearman/micropython,suda/micropython,oopy/micropython,drrk/micropython,EcmaXp/micropython,matthewelse/micropython,jimkmc/micropython,vriera/micropython,blazewicz/micropython,skybird6672/micropython,lbattraw/micropython,selste/micropython,mgyenik/micropython,henriknelson/micropython,KISSMonX/micropython,toolmacher/micropython,PappaPeppar/micropython,martinribelotta/micropython,methoxid/micropystat,ernesto-g/micropython,heisewangluo/micropython,tobbad/micropython,trezor/micropython,redbear/micropython,mpalomer/micropython,xuxiaoxin/micropython,tralamazza/micropython,orionrobots/micropython,torwag/micropython,matthewelse/micropython,ChuckM/micropython,micropython/micropython-esp32,Peetz0r/micropython-esp32,utopiaprince/micropython,stonegithubs/micropython,mianos/micropython,blazewicz/micropython,supergis/micropython,alex-march/micropython,firstval/micropython,ChuckM/micropython,HenrikSolver/micropython,cwyark/micropython,cnoviello/micropython,rubencabrera/micropython,puuu/micropython,hiway/micropython,mianos/micropython,dxxb/micropython,micropython/micropython-esp32,EcmaXp/micropython,tdautc19841202/micropython,firstval/micropython,adafruit/circuitpython,MrSurly/micropython,aitjcize/micropython,hosaka/micropython,cwyark/micropython,galenhz/micropython,HenrikSolver/micropython,blmorris/micropython,feilongfl/micropython,toolmacher/micropython,mianos/micropython,rubencabrera/micropython,omtinez/micropython,hosaka/micropython,heisewangluo/micropython,praemdonck/micropython,blazewicz/micropython,AriZuu/micropython,neilh10/micropython,alex-robbins/micropython,turbinenreiter/micropython,cnoviello/micropython,bvernoux/micropython,deshipu/micropython,puuu/micropython,slzatz/micropython,paul-xxx/micropython,firstval/micropython,methoxid/micropystat,praemdonck/micropython,blazewicz/micropython,adafruit/micropython,MrSurly/micropython-esp32,mianos/micropython,ahotam/micropython,cwyark/micropython,cloudformdesign/micropython,emfcamp/micropython,ericsnowcurrently/micropytho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icropython,xyb/micropython,TDAbboud/micropython,SHA2017-badge/micropython-esp32,noahwilliamsson/micropython,galenhz/micropython,SHA2017-badge/micropython-esp32,mpalomer/micropython,paul-xxx/micropython,cloudformdesign/micropython,tuc-osg/micropython,jimkmc/micropython,deshipu/micropython,xuxiaoxin/micropython,adafruit/micropython,firstval/micropython,dxxb/micropython,cloudformdesign/micropython,skybird6672/micropython,warner83/micropython,rubencabrera/micropython,suda/micropython,hosaka/micropython,skybird6672/micropython,SungEun-Steve-Kim/test-mp,MrSurly/micropython-esp32,alex-march/micropython,omtinez/micropython,adafruit/circuitpython,ahotam/micropython,infinnovation/micropython,vitiral/micropython,dinau/micropython,ChuckM/micropython,dinau/micropython,TDAbboud/micropython,henriknelson/micropython,pramasoul/micropython,Vogtinator/micropython,jimkmc/micropython,omtinez/micropython,alex-march/micropython,firstval/micropython,drrk/micropython,ernesto-g/micropython,MrSurly/micropython,jlillest/micropython,martinribelotta/micropython,ahotam/micropython,vriera/micropython,ryannathans/micropython,jlillest/micropython,noahchense/micropython,ganshun666/micropython,micropython/micropython-esp32,hiway/micropython,supergis/micropython