esp8266/mpconfigport: Reduce various parser-related allocation params.
esp8266/mpconfigport: Reduce various parser-related allocation params.

This gives noticeable result for parsing simple input (modelled on 32-bit
unix port):

Before:
>>> micropython.mem_total()
3360
>>> micropython.mem_total()
4472

After:
>>> micropython.mem_total()
3072
>>> micropython.mem_total()
4052

However, effect on parsing large input is much less conclusive, e.g.:

Before:
>>> micropython.mem_total()
3376
>>> import pystone_lowmem
>>> micropython.mem_total()
33006

delta=29630

After:
>>> micropython.mem_total()
3091
>>> import pystone_lowmem
>>> micropython.mem_total()
32509

delta=29418

pfalcon/micropython,oopy/micropython,drrk/micropython,ganshun666/micropython,tralamazza/micropython,TDAbboud/micropython,matthewelse/micropython,puuu/micropython,SHA2017-badge/micropython-esp32,pfalcon/micropython,toolmacher/micropython,mhoffma/micropython,redbear/micropython,tuc-osg/micropython,HenrikSolver/micropython,drrk/micropython,tuc-osg/micropython,TDAbboud/micropython,alex-robbins/micropython,dinau/micropython,deshipu/micropython,blazewicz/micropython,pozetroninc/micropython,adafruit/circuitpython,AriZuu/micropython,mhoffma/micropython,HenrikSolver/micropython,trezor/micropython,hiway/micropython,tobbad/micropython,toolmacher/micropython,turbinenreiter/micropython,HenrikSolver/micropython,dinau/micropython,drrk/micropython,bvernoux/micropython,ganshun666/micropython,hosaka/micropython,AriZuu/micropython,mpalomer/micropython,adafruit/micropython,dxxb/micropython,cwyark/micropython,swegener/micropython,Timmenem/micropython,torwag/micropython,alex-robbins/micropython,AriZuu/micropython,Peetz0r/micropython-esp32,trezor/micropython,tobbad/micropython,toolmacher/micropython,dmazzella/micropython,deshipu/micropython,tuc-osg/micropython,TDAbboud/micropython,trezor/micropython,micropython/micropython-esp32,alex-robbins/micropython,pramasoul/micropython,blazewicz/micropython,puuu/micropython,henriknelson/micropython,pozetroninc/micropython,Timmenem/micropython,selste/micropython,pramasoul/micropython,mpalomer/micropython,emfcamp/micropython,mhoffma/micropython,swegener/micropython,turbinenreiter/micropython,misterdanb/micropython,micropython/micropython-esp32,AriZuu/micropython,deshipu/micropython,henriknelson/micropython,henriknelson/micropython,turbinenreiter/micropython,emfcamp/micropython,HenrikSolver/micropython,adafruit/micropython,misterdanb/micropython,Peetz0r/micropython-esp32,adafruit/circuitpython,PappaPeppar/micropython,swegener/micropython,jmarcelino/pycom-micropython,lowRISC/micropython,misterdanb/micropython,ryannathans/micropython,torwag/micropython,pfalcon/micropython,redbear/micropython,tralamazza/micropython,PappaPeppar/micropython,turbinenreiter/micropython,alex-robbins/micropython,trezor/micropython,ganshun666/micropython,chrisdearman/micropython,micropython/micropython-esp32,jmarcelino/pycom-micropython,pfalcon/micropython,turbinenreiter/micropython,dmazzella/micropython,praemdonck/micropython,adafruit/micropython,kerneltask/micropython,oopy/micropython,matthewelse/micropython,pramasoul/micropython,PappaPeppar/micropython,dxxb/micropython,kerneltask/micropython,chrisdearman/micropython,MrSurly/micropython,tobbad/micropython,mhoffma/micropython,ryannathans/micropython,mpalomer/micropython,cwyark/micropython,TDAbboud/micropython,dxxb/micropython,blazewicz/micropython,praemdonck/micropython,jmarcelino/pycom-micropython,trezor/micropython,adafruit/micropython,praemdonck/micropython,MrSurly/micropython,adafruit/circuitpython,Timmenem/micropython,dinau/micropython,micropython/micropython-esp32,MrSurly/micropython,Peetz0r/micropython-esp32,swegener/micropython,torwag/micropython,praemdonck/micropython,blazewicz/micropython,selste/micropython,selste/micropython,MrSurly/micropython-esp32,hosaka/micropython,toolmacher/micropython,pramasoul/micropython,misterdanb/micropython,matthewelse/micropython,henriknelson/micropython,ganshun666/micropython,cwyark/micropython,SHA2017-badge/micropython-esp32,chrisdearman/micropython,SHA2017-badge/micropython-esp32,ryannathans/micropython,dinau/micropython,blazewicz/micropython,hosaka/micropython,drrk/micropython,alex-robbins/micropython,bvernoux/micropython,torwag/micropython,dmazzella/micropython,emfcamp/micropython,dmazzella/micropython,infinnovation/micropython,tralamazza/micropython,puuu/micropython,Peetz0r/micropython-esp32,jmarcelino/pycom-micropython,alex-march/micropython,infinnovation/micropython,redbear/micropython,lowRISC/micropython,ryannathans/micropython,torwag/micropython,MrSurly/micropython-esp32,alex-march/micropython,MrSurly/micropython,chrisdearman/micropython,redbear/micropython,tobbad/micropython,deshipu/micropython,MrSurly/micropython-esp32,pozetroninc/micropython,dinau/micropython,alex-march/micropython,lowRISC/micropython,adafruit/circuitpython,dxxb/micropython,PappaPeppar/micropython,oopy/micropython,MrSurly/micropython,misterdanb/micropython,SHA2017-badge/micropython-esp32,adafruit/circuitpython,puuu/micropython,hiway/micropython,kerneltask/micropython,AriZuu/micropython,matthewelse/micropython,dxxb/micropython,alex-march/micropython,bvernoux/micropython,matthewelse/micropython,henriknelson/micropython,drrk/micropython,kerneltask/micropython,Timmenem/micropython,mpalomer/micropython,adafruit/circuitpython,alex-march/micropython,hiway/micropython,PappaPeppar/micropython,oopy/micropython,TDAbboud/micropython,redbear/micropython,lowRISC/micropython,infinnovation/micropython,swegener/micropython,pfalcon/micropython,praemdonck/micropython,micropython/micropython-esp32,tuc-osg/micropython,MrSurly/micropython-esp32,hiway/micropython,adafruit/micropython,tralamazza/micropython,MrSurly/micropython-esp32,tuc-osg/micropython,jmarcelino/pycom-micropython,bvernoux/micropython,hosaka/micropython,Peetz0r/micropython-esp32,matthewelse/micropython,ryannathans/micropython,mhoffma/micropython,selste/micropython,puuu/micropython,lowRISC/micropython,cwyark/micropython,Timmenem/micropython,emfcamp/micropython,infinnovation/micropython,bvernoux/micropython,chrisdearman/micropython,kerneltask/micropython,hiway/micropython,hosaka/micropython,deshipu/micropython,mpalomer/micropython,oopy/micropython,pozetroninc/micropython,toolmacher/micropython,SHA2017-badge/micropython-esp32,pramasoul/micropython,HenrikSolver/micropython,tobbad/micropython,ganshun666/micropython,selste/micropython,emfcamp/micropython,cwyark/micropython,pozetroninc/micropython,infinnovation/micropython