ChangeLog
- rewrite framebuffer code
- support direct color
- add some new options (conf.h)
VT_CONTROL: don't handle vt-switching (vt-switching only works in linux)
FORCE_TEXT_MODE: need this option for switching from X to yaft
- various bug fixes
- don't affect SUBSTITUTE_WIDE/REPLACEMENT_CHAR (mkfont_bdf.c)