setup.py: set distribution.metadata.version from _version.py if we couldn't find it from git.
This simplifies reporting when we don't have the version. Also print the normalized version. refs #2340

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
setup.py: look for a tag named after APPNAME, not necessarily "allmydata-tahoe". refs #1146

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
setup.py: generate _version.h for use by Windows installer.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
Make a start on the Windows installer.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>
A beginning of a batch file for building on Windows 7 64-bit.