Enable windows WOAdaptor URLs, containing ".dll" or ".exe."

2nd try - now based on current integration branch

This patch enables WOAdaptor URL paths, containing ".dll" or ".exe", which is necessary for technical reasons, if you are hosting on Windows using IIS. The original Apple WO 5.4.3 implementation did disable this intentionally, for whatever reason.
I use this change on productive deployment for years.