build: build parser-lib by default on Windows
build: build parser-lib by default on Windows

Add parser-lib to the default build configuration on Windows.  This is
useful for building additional tooling.

benlangmuir/swift,gregomni/swift,parkera/swift,glessard/swift,JGiola/swift,glessard/swift,hooman/swift,atrick/swift,tkremenek/swift,tkremenek/swift,hooman/swift,hooman/swift,rudkx/swift,glessard/swift,xwu/swift,xwu/swift,glessard/swift,JGiola/swift,xwu/swift,JGiola/swift,benlangmuir/swift,benlangmuir/swift,gregomni/swift,tkremenek/swift,gregomni/swift,ahoppen/swift,benlangmuir/swift,xwu/swift,parkera/swift,atrick/swift,ahoppen/swift,rudkx/swift,roambotics/swift,atrick/swift,roambotics/swift,gregomni/swift,atrick/swift,parkera/swift,parkera/swift,JGiola/swift,roambotics/swift,roambotics/swift,apple/swift,tkremenek/swift,roambotics/swift,hooman/swift,rudkx/swift,hooman/swift,rudkx/swift,roambotics/swift,ahoppen/swift,ahoppen/swift,tkremenek/swift,atrick/swift,apple/swift,xwu/swift,hooman/swift,apple/swift,benlangmuir/swift,apple/swift,rudkx/swift,glessard/swift,JGiola/swift,gregomni/swift,JGiola/swift,tkremenek/swift,apple/swift,hooman/swift,gregomni/swift,xwu/swift,tkremenek/swift,parkera/swift,ahoppen/swift,glessard/swift,parkera/swift,parkera/swift,ahoppen/swift,benlangmuir/swift,apple/swift,xwu/swift,atrick/swift,rudkx/swift,parkera/swift