adding prepended linker arguments with distutils

this.txt.py

# in distutils/command/build_ext.py
# obviously a one-off hack...

549         self.compiler.link_shared_object(
550             objects, ext_path,
551             libraries=self.get_libraries(ext),
552             library_dirs=ext.library_dirs,
553             runtime_library_dirs=ext.runtime_library_dirs,
554             extra_preargs=['-Wl,-Bsymbolic-functions', '-Wl,-Bsymbolic'],
555             extra_postargs=extra_args,
556             export_symbols=self.get_export_symbols(ext),
557             debug=self.debug,
558             build_temp=self.build_temp,
559             target_lang=language)