Still fixing appveyor build.
Still fixing appveyor build.

The DLLs are in the expected directory on appveyor (C:\cygwin64\bin), so
it's unclear why it can't find them to copy them. With this commit, I'm
explicitly copying them instead of relying on the wildcards to do it.

RuleWorld/nfsim,RuleWorld/nfsim,RuleWorld/nfsim,RuleWorld/nfsim