test/test73.cpp reverted addition of special initilizer
test/common/init.hpp changed common initilizer to use float instead of (unsigned) int to initialize test vectors/matrices (this solved some boost::interval issues, but revealed other ones)
[SVN r52142]
triangular_access.cpp: tests constant and mutable iterators over triangular matrices
triangular_layout.cpp: tests storage layout of symmetric and triangular matrices
common/testhelper.hpp: added more common helper functions for tests
Jamfile.v2: added new unit tests
[SVN r51763]