main pkg only

turns out -devel depends on main pkg implicitly already anyway due to
libavahi-core dep (and make that explicit now)

avahi.spec

@@ -254,6 +254,8 @@ to run programs that use avahi.
 %package devel
 Summary:          Libraries and header files for avahi development
 Requires:         %{name}-libs%{?_isa} = %{version}-%{release}
+# for libavahi-core
+Requires:         %{name}%{?_isa} = %{version}-%{releaes}
 
 %description devel
 The avahi-devel package contains the header files and libraries
@@ -559,7 +561,6 @@ exit 0
 %{_includedir}/avahi-core
 %{_libdir}/pkgconfig/avahi-core.pc
 %{_libdir}/pkgconfig/avahi-client.pc
-%{_datadir}/dbus-1/interfaces/*.xml
 
 %files libs
 %doc README LICENSE
@@ -665,7 +666,7 @@ exit 0
 
 %changelog
 * Thu Aug 04 2016 Rex Dieter <rdieter@fedoraproject.org> - 0.6.32-3
-- include dbus xml interfaces in main pkg too, apparently used there for runtime introspection
+- include dbus xml interfaces in main pkg, apparently used there for runtime introspection
 
 * Tue Jul 19 2016 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.6.32-2
 - https://fedoraproject.org/wiki/Changes/Automatic_Provides_for_Python_RPM_Packages