Checks for rpath and own shipped libraries

If own libraries are shipped with the rpm package, the rpath in the
binary must be set, otherwise these libraries are not taken into use by
the dynamic linker. This is specially a problem with libraries which are
otherwise available on the platform.

If lib names in /usr/share/harbour-NAME/lib does not match the required
lib, then the dynamic linker does not use the self shipped library. This
could be a problem for libraries which are otherwise on the platform
available.

this pull request addresses both cases, including updated test rpms.