Update some VisualStudio project files to include src/hvf/hvf.c, to fix the error at https://gitlab.freedesktop.org/freetype/freetype/-/jobs/88070343 * builds/windows/vc2010/freetype.vcxproj: Add hvf.c before ftlzw.c. * builds/windows/visualc/freetype.vcproj: Add hvf.c before pcf.c. * builds/windows/visualce/freetype.vcproj: Add hvf.c before pcf.c.