libxml2: Add Patch to Fix win32/configure.js
libxml2: Add Patch to Fix win32/configure.js

configure.js was looking for configure.in, which has been renamed to
configure.ac, breaking standard Windows builds (and breaking our builds to
quickly create a workable config), so enclose a fix to fix this.

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