tools/mpy-tool.py: Don't strip directories from the frozen source name.
tools/mpy-tool.py: Don't strip directories from the frozen source name.

Directories are now supported by the frozen import system (to implement
frozen packages) so we should keep them.

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