(Usability) VFS should emit warning for Windows-native absolute path

[ellie]

For incorrect case, panda/VFS emits a warning:

:express(warning): Filename is incorrect case: /c/users/jonas/appdata/local/temp
/tmptqzlsccrystalbutt_shaders_defaultvertex_glsl instead of /c/Users/jonas/AppDa
ta/Local/Temp/tmptqzlsccrystalbutt_shaders_defaultvertex_glsl

However, if given a C:\... native style absolute path, it just quietly fails (Filename.exists returns False etc). Instead, it should also emit a similar warning pointing the user in the correct direction similar to the case sensibility one.

[rdb (rdb)]

This is a good suggestion. Not sure where this check would best be made, though - perhaps in the exists() implementation.

[rdb (rdb)]

A warning is now issued. Thanks for the suggestion!