dsl: Reorganize implementations in func.go
dsl: Reorganize implementations in func.go

This patch alphabetizes them.  This will make the source a bit easier
to navigate as more functions are added.

ZhongtianWang/quilt,quilt/quilt,tejasmanohar/quilt,tejasmanohar/quilt,LuiseV/quilt,akshayknarayan/quilt,ZhongtianWang/quilt,tejasmanohar/quilt,kelda/kelda,akshayknarayan/quilt,mmussomele/quilt,kelda/kelda,PenguinToast/quilt,kelda/kelda,stevenlin598/quilt,stevenlin598/quilt,NetSys/quilt,stevenlin598/quilt,kayousterhout/quilt,ZhongtianWang/quilt,LuiseV/quilt,ejj/quilt-dev,kklin/kelda,NetSys/quilt,NetSys/quilt,kklin/quilt,akshayknarayan/quilt,kklin/quilt,LuiseV/quilt,stevenlin598/quilt,kklin/kelda,kayousterhout/quilt,quilt/quilt,quilt/quilt,kayousterhout/quilt,stevenlin598/quilt,quilt/quilt,ZhongtianWang/quilt,PenguinToast/quilt,mmussomele/quilt,kklin/quilt,kklin/quilt,kelda/kelda,akshayknarayan/quilt,kklin/kelda,secant/quilt,secant/quilt,mmussomele/quilt,secant/quilt,secant/quilt,kayousterhout/quilt,LuiseV/quilt,ejj/quilt-dev,PenguinToast/quilt,ejj/quilt-dev,stevenlin598/quilt,kklin/kelda,tejasmanohar/quilt,mmussomele/quilt,mmussomele/quilt,ejj/quilt-dev,NetSys/quilt,mmussomele/quilt,PenguinToast/quilt,LuiseV/quilt,secant/quilt,NetSys/quilt,PenguinToast/quilt