With the changes to the font binaries committed (dc3f073d1c52), this patch updates WM_key_event_string(), which primarily formats the keyboard shortcuts shown in the pulldown menus:
- Nicer "Control" symbol for Macs
- "Windows" key symbol for Windows
- "Escape" symbol for Mac
- Better "Tab" character
- Better "Return" character
- Same "Space" as used in footer
Previously approved as part of https://developer.blender.org/D6055 but I wanted this change separate from the others.