Fix compilation with VC++ 2013

For whatever reason FT_Vector points[4] = { ... }; needs to come at the
beginning of a scope. Since that block was duplicated, just extract it
to a function.

This does not include buildsystem support, so actually compiling with
VC++ requires creating a project and supplying a config.h file.

Signed-off-by: wm4 <wm4@nowhere>