unix/main: Allow to print the parse tree in coverage build.
unix/main: Allow to print the parse tree in coverage build.

Passing -v -v -v on the command line of the coverage build will now print
the parse tree (as well as other things at this verbosity level).

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