HKLM\Software\Microsoft\Windows NT\CurrentVersion\FontSubstitutes for
"fromName[,cp]"="toName[,cp]" where cp can be an optional codepage.
Substitution occurs before scanning the available font list, as is the
case with Windows.
Various fixes for gdi font handling code including:
- Using TTs VDMX table to ensure that we get exactly that same size
font that Windows uses.
- Fixes to many members of the metrics structures.
- Font cache.
- Rotated text support.
- Support for GGO_GRAY?_BITMAP (ready for anti-aliased text).
- Support for GGO_NATIVE.