Document my investigations.
Document my investigations.

* subversoin/include/svn_fs.h:
  (svn_fs_commit_txn): describe the four return states concisely

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