Adjust ProjectFile.GetProperty to not require default values
Adjust ProjectFile.GetProperty to not require default values

Did this by renaming the old member to GetPropertyWithDefaults, and
adding a new member with the old name; new member passes
Map.empty<string,string> to the WithDefaults member.

isaacabraham/Paket,vasily-kirichenko/Paket,snowcrazed/Paket,jam40jeff/Paket,theimowski/Paket,sergey-tihon/Paket,Stift/Paket,isaacabraham/Paket,0x53A/Paket,cloudRoutine/Paket,NatElkins/Paket,baronfel/Paket,fsprojects/Paket,Thorium/Paket,MorganPersson/Paket,robertpi/Paket,cloudRoutine/Paket,Thorium/Paket,lexarchik/Paket,vbfox/Paket,cloudRoutine/Paket,MorganPersson/Paket,0x53A/Paket,Stift/Paket,thinkbeforecoding/Paket,Thorium/Paket,Stift/Paket,simonhdickson/Paket,theimowski/Paket,matthid/Paket,colinbull/Paket,magicmonty/Paket,Thorium/Paket,isaacabraham/Paket,vbfox/Paket,lexarchik/Paket,matthid/Paket,simonhdickson/Paket,mrinaldi/Paket,antymon4o/Paket,mrinaldi/Paket,Stift/Paket,robertpi/Paket,vasily-kirichenko/Paket,isaacabraham/Paket,NatElkins/Paket,vbfox/Paket,MorganPersson/Paket,jam40jeff/Paket,thinkbeforecoding/Paket,inosik/Paket,magicmonty/Paket,0x53A/Paket,magicmonty/Paket,snowcrazed/Paket,inosik/Paket,thinkbeforecoding/Paket,0x53A/Paket,artur-s/Paket,antymon4o/Paket,mexx/Paket,magicmonty/Paket,simonhdickson/Paket,simonhdickson/Paket,baronfel/Paket,NatElkins/Paket,matthid/Paket,snowcrazed/Paket,sergey-tihon/Paket,thinkbeforecoding/Paket,robertpi/Paket,lexarchik/Paket,matthid/Paket,MorganPersson/Paket,mrinaldi/Paket,NatElkins/Paket,vbfox/Paket,artur-s/Paket,snowcrazed/Paket,colinbull/Paket,mrinaldi/Paket,robertpi/Paket,cloudRoutine/Paket,mexx/Paket,fsprojects/Paket,lexarchik/Paket