Fix up FSharp.PowerPack version, and mark it with Specific Version false.
Fix up FSharp.PowerPack version, and mark it with Specific Version false.

harrisonmeister/Ensconce,Yewridge/Ensconce,ahmed-bakhdher-15below/Ensconce,robert-berry-15below/Ensconce,ahmed-bakhdher-15below/Ensconce,15below/Ensconce,mavnn/Ensconce,Yewridge/Ensconce,richard-green/Ensconce,mavnn/Ensconce,15below/Ensconce,BlythMeister/Ensconce,BlythMeister/Ensconce,robert-berry-15below/Ensconce,harrisonmeister/Ensconce