ported hashstack packages to hashstack2 on Cygwin
Refactored "everything" links to base_package.yaml

Previously the "everything" links were redundantly provided in

* autotools
* cmake
* distutils

The "everything" links are now in one place, base.
added dll copying to base Cygwin profiles
fixed incorrectly formatted szlib.yaml
Merge pull request #63 from hashdist/cygwin_port

Cygwin port + "everything" link refactor