bug fix: GSI API will default to generating GT3 proxies regardless of what's in the certificate request unless we clear the proxy cert info extension from our initialized proxy handle.
bug fix: GSI API will default to generating GT3 proxies regardless of
what's in the certificate request unless we clear the proxy cert info
extension from our initialized proxy handle.

globus/globus-toolkit,gridcf/gct,globus/globus-toolkit,gridcf/gct,gridcf/gct,ellert/globus-toolkit,globus/globus-toolkit,globus/globus-toolkit,globus/globus-toolkit,ellert/globus-toolkit,ellert/globus-toolkit,gridcf/gct,ellert/globus-toolkit,globus/globus-toolkit,globus/globus-toolkit,gridcf/gct,ellert/globus-toolkit,ellert/globus-toolkit,globus/globus-toolkit,ellert/globus-toolkit,gridcf/gct,ellert/globus-toolkit