Fixed compilation on mingw

Fixed compilation on mingw

This patch fixes SKIA compilation on mingw. Since SKIA makefile system is not able to use mingw yet, that patch has been done in Mozilla tree that imports SKIA. Required changes are:

- Change SK_OVERRIDE definition to be dependent on compiler instead of the target plaform (as it's a compiler extension)

- Use lowercased usp10.h in includes - needed for crosscompiling on case-sensitive OSes

- Changed some variable declarations in SkFontHost::GetAdvancedTypefaceMetrics so that goto instructions don't cross vaeiable declarations (GCC and strict C++ don't allow that)

[reed1, 2011-11-28 15:30:55]

landed by rev. 2750

[jacek, 2011-11-28 16:08:51]

On 2011/11/28 15:30:55, reed1 wrote:
> landed by rev. 2750

Thanks!