pixman: Add pixman.symbols
pixman: Add pixman.symbols

This allows us to build pixman as a DLL, by getting pixman-1.def from this
using the Visual Studio C-preprossor.

fanc999/gtk-msvc-projects,fanc999/gtk-msvc-projects,fanc999/gtk-msvc-projects,fanc999/gtk-msvc-projects,fanc999/gtk-msvc-projects