Tweak locking spec after more IRC discussion with sussman.
Tweak locking spec after more IRC discussion with sussman.

* notes/locking/locking-implementation.txt: Change the way lock tokens
  are pushed to the server on commit. Also make the server responsible for
  unlocking after commit.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion