Auto merge of #13661 - UK992:mingw-python, r=Wafflespeanut
Auto merge of #13661 - UK992:mingw-python, r=Wafflespeanut

Warn and exit mach if it detects MinGW Python

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r? @Wafflespeanut

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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #13644

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rnestler/servo,splav/servo,emilio/servo,sadmansk/servo,rnestler/servo,ConnorGBrewster/servo,thiagopnts/servo,jimberlage/servo,upsuper/servo,pyfisch/servo,dati91/servo,jimberlage/servo,nnethercote/servo,dsandeephegde/servo,avadacatavra/servo,canaltinova/servo,canaltinova/servo,peterjoel/servo,cbrewster/servo,notriddle/servo,upsuper/servo,mbrubeck/servo,sadmansk/servo,mbrubeck/servo,nnethercote/servo,paulrouget/servo,nnethercote/servo,DominoTree/servo,szeged/servo,DominoTree/servo,szeged/servo,rnestler/servo,fiji-flo/servo,jimberlage/servo,splav/servo,avadacatavra/servo,KiChjang/servo,emilio/servo,nnethercote/servo,notriddle/servo,peterjoel/servo,saneyuki/servo,avadacatavra/servo,emilio/servo,pyfisch/servo,nnethercote/servo,cbrewster/servo,SimonSapin/servo,peterjoel/servo,avadacatavra/servo,saneyuki/servo,CJ8664/servo,SimonSapin/servo,sadmansk/servo,fiji-flo/servo,szeged/servo,nnethercote/servo,eddyb/servo,larsbergstrom/servo,eddyb/servo,anthgur/servo,dati91/servo,peterjoel/servo,CJ8664/servo,CJ8664/servo,splav/servo,jimberlage/servo,KiChjang/servo,DominoTree/servo,szeged/servo,DominoTree/servo,saneyuki/servo,canaltinova/servo,paulrouget/servo,sadmansk/servo,upsuper/servo,notriddle/servo,sadmansk/servo,szeged/servo,peterjoel/servo,fiji-flo/servo,DominoTree/servo,rnestler/servo,dsandeephegde/servo,thiagopnts/servo,eddyb/servo,larsbergstrom/servo,eddyb/servo,fiji-flo/servo,peterjoel/servo,notriddle/servo,DominoTree/servo,paulrouget/servo,jimberlage/servo,notriddle/servo,fiji-flo/servo,canaltinova/servo,saneyuki/servo,ConnorGBrewster/servo,dsandeephegde/servo,emilio/servo,szeged/servo,dati91/servo,KiChjang/servo,DominoTree/servo,anthgur/servo,mbrubeck/servo,avadacatavra/servo,CJ8664/servo,nnethercote/servo,dsandeephegde/servo,CJ8664/servo,ConnorGBrewster/servo,mattnenterprise/servo,ConnorGBrewster/servo,SimonSapin/servo,paulrouget/servo,peterjoel/servo,notriddle/servo,KiChjang/servo,pyfisch/servo,upsuper/servo,emilio/servo,eddyb/servo,szeged/servo,fiji-flo/servo,pyfisch/servo,paulrouget/servo,sadmansk/servo,CJ8664/servo,pyfisch/servo,jimberlage/servo,upsuper/servo,ConnorGBrewster/servo,dati91/servo,cbrewster/servo,splav/servo,splav/servo,rnestler/servo,eddyb/servo,szeged/servo,KiChjang/servo,emilio/servo,emilio/servo,canaltinova/servo,pyfisch/servo,KiChjang/servo,mbrubeck/servo,cbrewster/servo,larsbergstrom/servo,larsbergstrom/servo,saneyuki/servo,saneyuki/servo,peterjoel/servo,notriddle/servo,mattnenterprise/servo,dati91/servo,dati91/servo,mattnenterprise/servo,dsandeephegde/servo,pyfisch/servo,anthgur/servo,SimonSapin/servo,canaltinova/servo,ConnorGBrewster/servo,upsuper/servo,paulrouget/servo,ConnorGBrewster/servo,thiagopnts/servo,KiChjang/servo,mattnenterprise/servo,paulrouget/servo,splav/servo,upsuper/servo,emilio/servo,emilio/servo,emilio/servo,nnethercote/servo,canaltinova/servo,cbrewster/servo,anthgur/servo,saneyuki/servo,avadacatavra/servo,pyfisch/servo,cbrewster/servo,SimonSapin/servo,KiChjang/servo,sadmansk/servo,DominoTree/servo,mbrubeck/servo,anthgur/servo,cbrewster/servo,eddyb/servo,szeged/servo,rnestler/servo,rnestler/servo,notriddle/servo,anthgur/servo,cbrewster/servo,sadmansk/servo,SimonSapin/servo,jimberlage/servo,canaltinova/servo,mattnenterprise/servo,dsandeephegde/servo,rnestler/servo,anthgur/servo,saneyuki/servo,mattnenterprise/servo,pyfisch/servo,jimberlage/servo,KiChjang/servo,SimonSapin/servo,saneyuki/servo,anthgur/servo,dsandeephegde/servo,fiji-flo/servo,larsbergstrom/servo,fiji-flo/servo,dati91/servo,splav/servo,upsuper/servo,DominoTree/servo,CJ8664/servo,larsbergstrom/servo,peterjoel/servo,nnethercote/servo,peterjoel/servo,nnethercote/servo,jimberlage/servo,DominoTree/servo,larsbergstrom/servo,thiagopnts/servo,splav/servo,notriddle/servo,avadacatavra/servo,paulrouget/servo,thiagopnts/servo,larsbergstrom/servo,larsbergstrom/servo,splav/servo,avadacatavra/servo,CJ8664/servo,thiagopnts/servo,mbrubeck/servo,thiagopnts/servo,notriddle/servo,szeged/servo,pyfisch/servo,saneyuki/servo,larsbergstrom/servo,paulrouget/servo,thiagopnts/servo,KiChjang/servo,dsandeephegde/servo,mbrubeck/servo,mattnenterprise/servo,mbrubeck/servo,dati91/servo,mattnenterprise/servo,ConnorGBrewster/servo,SimonSapin/servo,paulrouget/servo,splav/servo,eddyb/servo