Update Spleen fonts to version 1.9.0, bringing the following improvements:

- Set WEIGHT_NAME property to "Medium" for all sizes
- Increment STARTPROPERTIES to account for WEIGHT_NAME addition
- Enlarge vertical line for consistency with other small sizes (5x8 version)
- Add full support for the Latin-1 Supplement Unicode block (6x12 version)

Initial import of font-spleen-misc-1.8.2.

Discussed with nia@.