Added Windows SDP into The Workshop:
* Combined (back) into Unix SDP structure.
* Avoided adding duplicate files p4verify.pl, p4review.(py,cfg).
* Upgraded 'dist.sh' utility to produce both Unix and Windows
packages (*.tgz and *.zip), adjusting line endings on text
files to be appropriate for Windows prior to packaging.
* Resolve duplication of [template_]configure_new_server.bat.
* Merge test suites for Windows and Unix into a cohesive set.