Allow the user to specify the "biggest" section type from the command line; default is "chapter".  Use 'python toc2bkm.py -c section' to use with Python HOWTO documents.
Allow the user to specify the "biggest" section type from the command line;
default is "chapter".  Use 'python toc2bkm.py -c section' to use with
Python HOWTO documents.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator