This commit was manufactured by cvs2svn to create branch
'uBLAS_assignment_sematics'.
Simple addative assignment for similar container
merged
FIX Container concept requires erase_element
merge HEAD
Container types used throughout.
Concreate and abstract_tag dropped
Vector/Matrix Expression concept not default contructable
Merge from HEAD for testing
scalar_expression too
Allow for non default constructable proxies
This commit was manufactured by cvs2svn to create branch
'uBLAS_assignment_sematics'.
FIX const correctness of projections restored
FIX previous const changes, return value and constructed projection must match