[opensuse-buildservice] project config for RHEL6 / CentOS6

Hi, I added some lines to my project config to ease RHEL6/CentOS6 packaging and was told by Ismail Dönmez that it maybe useful to integrate them at a higher level. So here they are: %if 0%{?centos_version} >= 600 || 0%{?rhel_version} >= 600  Substitute: libxerces-c-devel xerces-c-devel  Substitute: pkg-config pkgconfig  Substitute: libexpat-devel expat-devel %endif One more question while I am here: Does anyone know if the package lists for CentOS and RHEL always differ (for instance concerning xerces-c) or whether this is a build service peculiarity? Regards, Michael