Add several missing chars:
- Š/š (S with hacek, all sizes)
- Ž/ž (Z with hacek, all sizes)
- Œ/œ (OE ligature, all sizes)
- Ð/ð (eth, large font was missing)
- Þ/þ (thorn, large font was missing)
- º (male ordinal sign, all sizes)
Also move Ÿ (Y with umlaut, all sizes) to the correct position in the charset
To add some chars it was necessary to shuffle some OTTD specific chars (arrows, transport type markers) around
This has two major advantages:
- Removal of a maze of global variables and distinction of cases from the sprite loading routines, which weren't directly related to the loading process in the first place
- NewGRF actions no longer occupy sprite slots - for example when using DBSetXL this saves about 2000 slots! (you could regard this as a bug fix)
If i didn't make a major mistake this change should have no negative effect on NewGRF support, please test!
