Convert custom characters to 8 byte bitmap.

Remove comments from the code that are already part of docbook documentation.
Pass through indent.
Remove unused prototypes.

ChangeLog

@@ -27,6 +27,7 @@ v.0.5dev (ongoing development)
  * CFontzPacket: Use cellwidth = 5 on CFA-631 and CFA-635 too
  * t6963: Convert font to 8 byte bitmap
  * convert i2500vfd and mdm166a driver to use 8 byte bitmap custom character
+ * ula200: convert custom characters to 8 byte bitmap
 
 v0.5.4
  * Update driver includes and LDFLAGS (fixed glk and bayrad binding error)