Ignore two Windows-only tests on Linux

UNC paths work differently on Linux.
Update dependencies

Previously we copied the Palaso debug dlls as well but overwrote the
release versions with them. We don't really need the debug dlls, so
we just omit them now.
Fix Linux package build

Attempting to fix Linux package build.
Merge pull request #155 from ermshiperete/FixLinuxTests

Ignore two Windows-only tests on Linux