Removed exception for convex_hull because that can be handled (for now) by leaving output empty. To be decided what is the definitive (additional, optional) behaviour.
[SVN r76514]
Adaptions to test with respect to new namespace model
Removed GMP/CLN and, where it was present, replaced by TTMATH
Small fix in comparable_distance test
All testfiles use bg as alias now
[SVN r66811]