This commit was manufactured by cvs2svn to create branch 'RC_1_33_0'.

svn path=/branches/RC_1_33_0/boost/boost/program_options/; revision=30300
merged from trunk

svn path=/branches/RC_1_33_0/boost/libs/program_options/; revision=30560
Merge fixes for unregisted options and inaccessible 'style_parser' method
from trunk to RC_1_33_0.

svn path=/branches/RC_1_33_0/boost/boost/program_options/; revision=31615