TESTS: reduce number of resamplehandle seek tests for performance reasons
TESTS: reduce number of resamplehandle seek tests for performance reasons

tim-janik/beast,tim-janik/beast,swesterfeld/beast,tim-janik/beast,GNOME/beast,GNOME/beast,GNOME/beast,tim-janik/beast,swesterfeld/beast,tim-janik/beast,swesterfeld/beast,tim-janik/beast,GNOME/beast,tim-janik/beast,GNOME/beast,swesterfeld/beast,swesterfeld/beast,GNOME/beast,swesterfeld/beast,swesterfeld/beast,GNOME/beast