Added stubs for CheckEscapes[AW] and ExtractAssociatedIconExW.

- pass the infoPtr around instead of the hwnd
- use W-functions instead of A-functions
- more checks in case of failures
- make indentation and style consistent throughout the file

Property sheet Unicodification.
Support additional wizard flags.

return the primary lang else we return 0.

Adds nice things like anti-aliased text.

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.