RPM: fix message headers path

cta.spec.in

@@ -180,7 +180,7 @@ Frontend Interface
 %defattr(0755,root,root)
 %{_libdir}/libXrdCtaMessages.a
 %{_includedir}/cta
-%{_includedir}/cta/messages
+%{_includedir}/cta/xroot_plugins/messages
 
 %package -n cta-cli
 Summary: CERN Tape Archive: command line interface

xroot_plugins/messages/CMakeLists.txt

@@ -33,7 +33,7 @@ install (TARGETS XrdCtaMessages DESTINATION usr/${CMAKE_INSTALL_LIBDIR})
 
 install (
   FILES ${ProtoHeaders}
-  DESTINATION usr/${CMAKE_INSTALL_INCLUDEDIR}/cta/messages
+  DESTINATION usr/${CMAKE_INSTALL_INCLUDEDIR}/cta/xroot_plugins/messages
 )
 
 install (