This reverts commit 573f8023.

This viewer-manager refactors the bad-graphics-card detection.

Restored removed commits since issue was isolated and bypassed.

Original issue: win32util.py imports wmi, if import fails it uses
registry for getting dns, if import works, it uses wmi to get dns.
Including wmi broke dns for some of the users ([Errno 11001] Name or
service not known)

This reverts commit 68d5a36f.

Issue reproed again, restoring.

This is viewer-manager's DRTVWR-587-actions branch updated from the new master
branch.

This includes this week's CEF 118.

glext, which contains only header files, now builds only a single common
package instead of platform-specific ones. But as long as we retain the
platform-specific URLs, autobuild will continue to prefer those over the
common platform. Remove all platform-specific glext package entries.