font handling bug in qt 4.0.1

[LiuCougar]

*Short description: Fake oblique font does not work properly

*What I did:
Open qtconfig, in the font tab, select a font which does not have an
italic style, select style oblique

*What I expected to see:
the "Sample Text" in the lineedit should be shown in style oblique

*What I got instead:
the "Sample Text" in the lineedit did not change style to oblique

Attached is a patch to solve this issue, and also add support for
"fake bold" as well (which is supported by freetype 2.1.10)

Please someone review it?

Regards,
Cougar
--
"People's characters are strengthened through struggle against
difficulties; they are weakened by comfort."
- Old Chinese adage
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