Emm, your probably not going to like this answer but your probably just going to have to wait until there is an official Suse RPM of the newest version of gaim to update. Usually RPM's require specific dependencies to install, and rather than actually looking for the libraries it needs the installer looks to see if the specific RPM that contains the library has been installed. What this means for you is unless you have the proper Suse specific RPMs that support Gaim, installation will fail with any other distro's RPM's. Because while you may have suse-lib-1.3.1, the RPM might be looking for mdk-lib-1.3.1. They are the same library, just named differently and the installation of the RPM will complain and fail.
Or, if you are SURE you have all the needed libraries you can just force the installation of the RPM, telling the installer to ignore dependencies and install it anyway. Once the package is installed Gaim is going to look for the libraries like any other binary. So in that case you can just go ahead and install any RPM from any distro, but things can get sticky really quick if you do this.
Hope this helps a bit!