Merge topic 'remove-vs9-generator'

03c31b0395 Drop Visual Studio 9 2008 generator
88c70dde34 cmGlobalVisualStudioGenerator: Use member 'Version' more directly
0bdcf1cb17 cmLocalVisualStudio7Generator: Make vfproj conditions more explicit
acc5ea7390 cmLocalVisualStudio7Generator: Reset per-target members after every target
252702bb35 cmVisualStudioGeneratorOptions: Order version check branches consistently

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: scivision <michael@scivision.dev>
Merge-request: !9496