py/vm: Convert mp_uint_t to size_t where appropriate.
py/vm: Convert mp_uint_t to size_t where appropriate.

MrSurly/micropython-esp32,MrSurly/micropython-esp32,micropython/micropython-esp32,puuu/micropython,deshipu/micropython,oopy/micropython,pfalcon/micropython,Peetz0r/micropython-esp32,kerneltask/micropython,tralamazza/micropython,deshipu/micropython,deshipu/micropython,SHA2017-badge/micropython-esp32,tobbad/micropython,TDAbboud/micropython,pozetroninc/micropython,micropython/micropython-esp32,SHA2017-badge/micropython-esp32,chrisdearman/micropython,TDAbboud/micropython,pfalcon/micropython,adafruit/micropython,pfalcon/micropython,cwyark/micropython,HenrikSolver/micropython,bvernoux/micropython,hiway/micropython,MrSurly/micropython,trezor/micropython,henriknelson/micropython,pozetroninc/micropython,SHA2017-badge/micropython-esp32,AriZuu/micropython,puuu/micropython,tralamazza/micropython,hiway/micropython,selste/micropython,toolmacher/micropython,adafruit/circuitpython,selste/micropython,hiway/micropython,puuu/micropython,pramasoul/micropython,Peetz0r/micropython-esp32,ryannathans/micropython,torwag/micropython,HenrikSolver/micropython,PappaPeppar/micropython,toolmacher/micropython,AriZuu/micropython,MrSurly/micropython,cwyark/micropython,PappaPeppar/micropython,infinnovation/micropython,pfalcon/micropython,pramasoul/micropython,oopy/micropython,TDAbboud/micropython,MrSurly/micropython-esp32,PappaPeppar/micropython,lowRISC/micropython,henriknelson/micropython,kerneltask/micropython,deshipu/micropython,ryannathans/micropython,deshipu/micropython,hiway/micropython,dmazzella/micropython,Timmenem/micropython,henriknelson/micropython,adafruit/circuitpython,chrisdearman/micropython,Timmenem/micropython,pozetroninc/micropython,trezor/micropython,adafruit/micropython,AriZuu/micropython,tralamazza/micropython,blazewicz/micropython,pramasoul/micropython,bvernoux/micropython,adafruit/circuitpython,SHA2017-badge/micropython-esp32,pozetroninc/micropython,blazewicz/micropython,blazewicz/micropython,toolmacher/micropython,blazewicz/micropython,cwyark/micropython,cwyark/micropython,infinnovation/micropython,MrSurly/micropython-esp32,Peetz0r/micropython-esp32,torwag/micropython,dmazzella/micropython,Timmenem/micropython,alex-robbins/micropython,pramasoul/micropython,micropython/micropython-esp32,PappaPeppar/micropython,AriZuu/micropython,selste/micropython,TDAbboud/micropython,infinnovation/micropython,toolmacher/micropython,adafruit/micropython,alex-robbins/micropython,dmazzella/micropython,torwag/micropython,adafruit/circuitpython,chrisdearman/micropython,puuu/micropython,dmazzella/micropython,lowRISC/micropython,blazewicz/micropython,hiway/micropython,tobbad/micropython,selste/micropython,MrSurly/micropython,TDAbboud/micropython,cwyark/micropython,adafruit/micropython,swegener/micropython,AriZuu/micropython,Peetz0r/micropython-esp32,tobbad/micropython,ryannathans/micropython,pfalcon/micropython,swegener/micropython,adafruit/circuitpython,chrisdearman/micropython,trezor/micropython,Timmenem/micropython,PappaPeppar/micropython,ryannathans/micropython,henriknelson/micropython,tobbad/micropython,alex-robbins/micropython,trezor/micropython,MrSurly/micropython-esp32,kerneltask/micropython,trezor/micropython,micropython/micropython-esp32,kerneltask/micropython,Timmenem/micropython,MrSurly/micropython,bvernoux/micropython,alex-robbins/micropython,oopy/micropython,bvernoux/micropython,swegener/micropython,oopy/micropython,torwag/micropython,swegener/micropython,HenrikSolver/micropython,lowRISC/micropython,puuu/micropython,adafruit/micropython,infinnovation/micropython,chrisdearman/micropython,MrSurly/micropython,bvernoux/micropython,lowRISC/micropython,kerneltask/micropython,HenrikSolver/micropython,alex-robbins/micropython,ryannathans/micropython,infinnovation/micropython,HenrikSolver/micropython,torwag/micropython,lowRISC/micropython,selste/micropython,micropython/micropython-esp32,SHA2017-badge/micropython-esp32,tralamazza/micropython,tobbad/micropython,henriknelson/micropython,swegener/micropython,adafruit/circuitpython,pramasoul/micropython,pozetroninc/micropython,toolmacher/micropython,oopy/micropython,Peetz0r/micropython-esp32