added RequireEscapingSlashesInDefaultValue for backwardscomp.
added RequireEscapingSlashesInDefaultValue for backwardscomp.

bhaeussermann/NLog,MartinTherriault/NLog,UgurAldanmaz/NLog,NLog/NLog,tetrodoxin/NLog,bryjamus/NLog,sean-gilliam/NLog,hubo0831/NLog,AndreGleichner/NLog,bryjamus/NLog,michaeljbaird/NLog,BrutalCode/NLog,AndreGleichner/NLog,hubo0831/NLog,luigiberrettini/NLog,tetrodoxin/NLog,304NotModified/NLog,nazim9214/NLog,luigiberrettini/NLog,UgurAldanmaz/NLog,bjornbouetsmith/NLog,breyed/NLog,breyed/NLog,ilya-g/NLog,MoaidHathot/NLog,nazim9214/NLog,BrutalCode/NLog,ie-zero/NLog,kevindaub/NLog,kevindaub/NLog,tohosnet/NLog,bhaeussermann/NLog,ie-zero/NLog,MoaidHathot/NLog,littlesmilelove/NLog,littlesmilelove/NLog,tohosnet/NLog,bjornbouetsmith/NLog,MartinTherriault/NLog,snakefoot/NLog,michaeljbaird/NLog,ilya-g/NLog