Fixed cygwin installation issues, other niceties

Changed http://www.cygwin.com/setup.exe to http://www.cygwin.com/setup-x86_64.exe (as http://www.cygwin.com/setup.exe is 404 now)

Explicitly list all cygwin dependencies, as they do not appear to install automatically any more)
Removed curl, and vim packages, as they are not required
Symlinked /home/vagrant to %SystemDrive%/users/vagrant
Removed "SSHD" from 'netsh' command as it reported a syntax error
Changed hardcoded C: values to use %SystemDrive%
Fixed other minor cygwin installation issues
Changed iso_urls to be relative in template.json
Updated 'make list' output to display in sorted order
Corrected product key in misheska-win2012x64/floppy/Autounattend.xml
Added removal of template/*/output-vmware directories to 'clean' action in Makefile
Added win7x64pro template
All Windows builds have been tested, and install unattendedly using VMWare WS 10