DLG_STATIC is intended to disable Windows DLL linking attributes.
It does not hurt to define it explicitly when we wrap DLG code.
This fixes tons of LNK4286 and C4273 warnings from MSVC if we
forget to define DLG_STATIC as a compiler option.
* builds/windows/vc2010/freetype.vcxproj: Remove DLG_STATIC option.
* src/dlg/dlgwrap.c [FT_DEBUG_LOGGING]: Define DLG_STATIC.
* include/freetype/internal/ftdebug.h [FT_DEBUG_LOGGING]: Ditto.
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