http://code.google.com/p/google-api-python-client/source/browse/apiclient/ext/au
thtools.py uses OptionParser (optparse is deprecated as well). Most of the new
api libraries use gflags. When oauth1 is invoked from the program which uses
gflags, optionaprser tries to parse the gflags and fails.
This could be fixed by using gflags in oauth1 authtools.