Blender Git Loki

Bundle default workspace user configuration file with Blender

This contains nothing but the old screen-layouts converted into
workspaces (and "Default" layout/workspace is now called "General").

Note that this adds the workspaces.blend directly, no datatoc conversion
is used like for default startup.blend. Mainly for these two reasons:
* Appending only supports regular .blend files
* Regular .blend is much smaller than datatoc one (181kB vs. 1.4MB)