Is GtkSourceView available for Windows 10 ?

[Stefan Salewski <mail ssalewski de>]

A windows 10 user seems to manage to get gintro package installed on
his windows 10, see

https://github.com/StefanSalewski/gintro/issues/24

All the shipped examples seems to work indeed, but he had to skip
GtkSource install (generating GObject-Introspection based bindings)
because GTKSourceView dll may be missing. I can not find much about
this issue with google. If GtkSourceView is intentionally not include
in windows packages, then I will just skip that part for install
script.