(libiberty_demanglers): new table for demangle styles
        (cplus_demangle_set_style): New function for setting style
        (cplus_demangle_name_to_style): New function to translate name
        * include/demangle.h
        (libiberty_demanglers): new table for different styles
        (cplus_demangle_set_style): New function for setting style
        (cplus_demangle_name_to_style): New function to translate name

Co-Authored-By: Jason Merrill <jason@casey.cygnus.com>

From-SVN: r33525