Add the contents of `.docs` to a `docs-support` directory in Windows packages. (#2416)
Add the contents of `.docs` to a `docs-support` directory in Windows packages. (#2416)

This is the AppVeyor part of #2291.
jemc/ponyc,sgebbie/ponyc,Praetonus/ponyc,ponylang/ponyc,Theodus/ponyc,cquinn/ponyc,dipinhora/ponyc,Praetonus/ponyc,dipinhora/ponyc,Theodus/ponyc,cquinn/ponyc,jemc/ponyc,cquinn/ponyc,kulibali/ponyc,Praetonus/ponyc,sgebbie/ponyc,sgebbie/ponyc,cquinn/ponyc,CausalityLtd/ponyc,ponylang/ponyc,Praetonus/ponyc,sgebbie/ponyc,CausalityLtd/ponyc,Theodus/ponyc,ponylang/ponyc,jemc/ponyc,kulibali/ponyc,kulibali/ponyc,Theodus/ponyc,kulibali/ponyc,CausalityLtd/ponyc,dipinhora/ponyc,sgebbie/ponyc,Theodus/ponyc