[Bf-taskforce25] G.f and other globals

[Brecht Van Lommel]

Hi,

It would be good to remove things like G.f, G.flags and G.fileflags,
however the solution to those is not a single replacement variable,
otherwise we're just moving the mess. And we don't have to fix this all
immediately, we should remove global variables and flags incrementally.

For part of these I'd like to introduce a MainSettings struct in Main,
which would contain file wide settings that are saved to file.

http://wiki.blender.org/index.php/BlenderDev/Blender2.5/GlobalsBadCalls#File_Wide_Settings

What do you think, good idea, bad idea?

Brecht