SCons: Fix output with vsproj=yes

[Repiteo]

A handful of tweaks/fixes all related to passing vsproj=yes to SCons:

• Ensure *.vcsproj.filters has a designated section for "Other Files". On live, the files designated to it (.glsl, .natvis) wouldn't appear at all¹.
• Ensure *.sln is written with CRLF line-endings.
• Fix comment giving the wrong input for generating & building from cl.
• Expand cpp.hint defines to include GDVIRTUAL, EXBIND, and MODBIND.
• Generate cpp.hint before vsproj; previously wouldn't get built at all unless vsproj_gen_only=no.

Footnotes

1. https://chat.godotengine.org/channel/buildsystem?msg=krbx6pCcdAFBczb9T ↩

[ChristopheClaustre]

As said in godot contributors chat, .glsl files were not referenced in the vs solution.
I confirm that thanks to this PR, they are now.

I can't say for the other aspect of this PR.

[akien-mga]

CC @shana

[akien-mga]

Thanks!