Fixes for:

[ #4337 ] Cant refresh the C:\
[ #4710 ] Wrong paths in file selector under user prefs
[ #4353 ] Using ^ char + click on Open/Load = Blender crash

Details:

Fixes for root paths like C:\ on Windows, where Blender still used '/'.

Also contains fixes for relative paths:
- no relative paths for the default dirs (forced to absolute)
- message if using relative paths when .blend file hasn't been saved.

Lastly also added '.' for refresh in root paths. Windows
FindFirstFile/FindNextFile also return '.' and '..', but not in root paths like C:\

1 files changed, 3 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_global.h b/source/blender/blenkernel/BKE_global.h
index 3051403c412..e239d4de3c0 100644
--- a/source/blender/blenkernel/BKE_global.h
+++ b/source/blender/blenkernel/BKE_global.h
@@ -88,6 +88,9 @@ typedef struct Global {
 	/* strings: lastsaved */
 	char ima[160], sce[160], lib[160];
 
+	/* flag: if != 0 G.sce contains valid relative base path */
+	int relbase_valid;
+
 	/* strings of recent opend files */
 	struct ListBase recent_files;