Fix the build

Include correct BuildRequires for the Python 3 version, and update
Requires as well.

orca.spec

@@ -15,33 +15,29 @@ URL:            http://projects.gnome.org/orca/
 Source0:        http://download.gnome.org/sources/orca/3.7/orca-%{version}.tar.xz
 
 BuildRequires:  brlapi-devel >= %{brlapi_version}
-BuildRequires:  python-brlapi
 BuildRequires:  brltty >= %{brltty_version}
-BuildRequires:  pyxdg
 BuildRequires:  gettext
 BuildRequires:  intltool
-BuildRequires:  pygobject3-devel
-BuildRequires:  pyatspi
 BuildRequires:  at-spi2-core-devel
-BuildRequires:  dbus-python
-BuildRequires:  liblouis-python
 BuildRequires:  liblouis-devel
-BuildRequires:  speech-dispatcher-python
+BuildRequires:  liblouis-python3
 BuildRequires:  gtk3-devel
 BuildRequires:  itstool
-BuildRequires:  python3
 BuildRequires:  pygobject3-devel
+BuildRequires:  python3-brlapi
+BuildRequires:  python3-devel
+BuildRequires:  python3-pyatspi
+BuildRequires:  python3-speechd
 Obsoletes:      gnopernicus
 Provides:       gnopernicus
 
 Requires:       control-center
+Requires:       liblouis-python3
 Requires:       libwnck3
-Requires:       pyatspi
-Requires:       pyxdg
-Requires:       speech-dispatcher
-Requires:       speech-dispatcher-python
-Requires:       liblouis-python
-Requires:       python-brlapi >= %{brlapi_version}
+Requires:       python3-brlapi >= %{brlapi_version}
+Requires:       python3-cairo
+Requires:       python3-pyatspi
+Requires:       python3-speechd
 
 %description
 Orca is a flexible, extensible, and powerful assistive technology for people
@@ -80,7 +76,7 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 %files -f %{name}.lang
 %doc AUTHORS COPYING NEWS README
 %{_bindir}/orca
-%{python_sitearch}/orca
+%{python3_sitearch}/orca
 %{_datadir}/icons/hicolor/*/apps/orca.png
 %{_datadir}/icons/hicolor/scalable/apps/orca.svg
 %{_datadir}/orca