wxWidgets-3_0-3.0.3-5.54

- Rework provides/conflicts between -devel variants.

- Rework language package dependencies with base library.
- Replace otherproviders() by regular Conflicts.

- Unify packaging
- Backport spinctrl patches: 0001-spinctrl.patch
  0002-spinctrl.patch

- Fix SLE12 build with SDL1.

- Make use of %is_opensuse to select SDL1 for SLE12

- Disable building WebView (the built-in browser widget),
  as pkconfig(webkit-1.0) (= webkit1gtk2) is going away.

- update to 3.0.3
  See: https://github.com/wxWidgets/wxWidgets/blob/v3.0.3/docs/changes.txt#L583-L632
- change source url to github
- rebase patch soversion.diff
- remove following patches, because they are now in upstream:
  0001-avoid-passing-invalid-rect-to-Refresh-closes-16819.patch
  0001-Ensure-the-PangoFontFace-type-is-loaded.patch
  0001-Fix-wxPrintDialog-when-used-directly-see-16821.patch
  0001-set-transient-parent-for-about-dialog-closes-16823.patch
  0001-Avoid-refreshing-not-currently-visible-items-in-gene.patch
  0001-Avoid-Gtk-Message-GtkDialog-mapped-without-a-transie.patch
  0001-Fix-wxSpinButton-best-size-for-GTK-3.12-and-later-se.patch
  0001-Fix-drawing-checkbox-and-radiobutton-in-checked-stat.patch
  0001-Provide-trivial-GDK_IS_X11_DISPLAY-definition-for-GT.patch
  0001-Fix-spurious-assert-in-wxGTK-wxDataViewCtrl-EditItem.patch
  0002-Don-t-defer-wxTLW-initialization-in-wxGTK-when-not-u.patch
  0003-Don-t-use-frame-extents-when-not-using-X11-in-wxGTK.patch
  0004-Don-t-crash-when-switching-to-full-screen-in-non-X11.patch
  0005-Don-t-use-X11-only-functions-when-not-using-X11-in-w.patch
  abs.diff
  wxWidgets-3_0-gstreamer-1.0.patch

- Bump __GXX_ABI_VERSION to 1011 for gcc7
- Add 0001-Fix-spurious-assert-in-wxGTK-wxDataViewCtrl-EditItem.patch
  to resolve crash [boo#1034350]

- Fix devel package description.

- Bump (SUSE-local) SO version to force rebuild.