I am not able to run the last step successfully. Initially, I thought it's because I used wrong password. So I sent another new password hash to Chris Lattner to update it. He updated the password hash for me. When I used the new password to run svn commit -m "Request commit access for jtony" still failed. Anyway know why? Thanks!
Problem solved, by explicitly specify username and password when commiting (not wait until prompt the password enter)
svn commit -m "Request commit access for jtony" --username=jtony --password=$PASSWORD Sending github-usernames.txt Transmitting file data . Committed revision 375223.