Accepting request 985562 from home:StefanBruens:branches:X11:wxWidgets

The xml files are required when bootstrapping wxWindows from a git checkout.

- Install missing header added in 3.1.7, add
  0001-Add-new-wx-filedlgcustomize.h-to-the-list-of-files.patch
- Add doc generation using _multibuild
- Enable non-gui tests

OBS-URL: https://build.opensuse.org/request/show/985562
OBS-URL: https://build.opensuse.org/package/show/X11:wxWidgets/wxWidgets-3_2?expand=0&rev=92

_multibuild

@@ -2,4 +2,5 @@
   <package>GTK3</package>
   <package>GTK3-nostl</package>
   <package>Qt</package>
+  <package>doc</package>
 </multibuild>