RPM updates to account for dashelConfig.cmake

Stephane,

Sorry my shared lib changes broke static builds. The dashelConfig.cmake stuff looks great. This pull request just moves dashelConfig.cmake into the arch-independent /usr/share/dashel (which seems to be where the Linux Filesystem Hierarchy Standard says it belongs), and updates the dashel.spec file to use the latest commit hash.

BTW, I noticed that the aseba release-1.3.x branch doesn't have the changes to use dashelConfig.cmake. My rpms are currently built from that branch. Should release-1.3.x have the changes as well or should I build packages from master instead? What are your PPAs built from?