string representation sufficiently that it now represents cleanly
everything that the DOH object representation can. Comparison on DOH type
objects now tests only for complete equivalence of form, and should match
string comparison of string representations.
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@344 626c5289-ae23-0410-ae9c-e8d60b6d4f22