Final tweaks (for now).
Final tweaks (for now).

* subversion/libsvn_wc/wc-metadata.sql:
  (LOCKS): new table to hold info about locks in the repository
  (I_LOCKS): removed
  (CHANGELIST): allow wc_id to be NULL
  (LOCKS): new table to cache repository locks


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@875165 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion