Emacs 22.1 Windows ClearType Support

[Ng, Andrew]

I have been having a go at fixing up the issues related to ClearType in
Emacs 22.1.

I think I have pretty much sorted out the major issues and everything
appears to work fine now. I've tried as much as possible not to alter
the non-ClearType code path.

I've also added an environment variable "EMACS_CLEARTYPE". If present
this will disable ClearType if its value is 0 and will enable ClearType
if its value is non-zero. Otherwise, ClearType is enabled according to
the system settings.

I've attached a patch file for my changes.

Thank you.

Regards,

Andrew Ng

patchfile
Description: patchfile