Cosmetic and documentation improvements for abc::stream_base and derived classes

Make the name of a few methods shorter, and document most methods in most
abc::stream_base-derived classes.
Cosmetic and documentation improvements for abc::stream_base and derived classes

Amendment to commit b8333fc756a8c631a9470aa9666030820788327b; change the
name more methods, and document more methods in abc::stream_base-derived
classes.
Merge branch 'master' into vs2010