Boost compatibility increased.

svn path=/branches/unlabeled-1.1.2/boost/boost/numeric/ublas/; revision=14616
Reenabled packed matrix type checking,
added Kresimir Fresl's indirection optimizations,
reworked documentation slightly,
more bug fixes

svn path=/branches/unlabeled-1.1.2/boost/boost/numeric/ublas/; revision=14708
More bugfixes and more docs.

svn path=/branches/unlabeled-1.1.2/boost/boost/numeric/ublas/; revision=15210
Removed old branches.

svn path=/branches/unlabeled-1.1.2/boost/boost/numeric/ublas/; revision=38550