yaml.ffi: Fix library names. (for Windows, it's called libyaml-0-2.dll and
we dont prefix 'lib' in find-library)
fftw.ffi: Find the fftw dll for Windows.
io.launcher: Fix help-lint for Windows. The examples don't work on
Windows, so disable them.
tools.deploy: Pump p p pump pump it up
io.sockets.secure.openssl: We don't care what the error is as long as it fails.
windows.directx: Upgrade xinput library.
use "of" in place of "swap at".
heaps: use before? and after?.
VM: fixing some implicit casts from cell to fixnum

The types are compatible, but it looks a little nicer if the variable
that receives a return value declared as cell also is a cell.