On the fsfs-pack branch: * subversion/libsvn_fs_fs/structure:   Update with some notes about packing.
On the fsfs-pack branch:
* subversion/libsvn_fs_fs/structure:
  Update with some notes about packing.


git-svn-id: 6d1e534e20247d472effbf726af644f7d9a7221d@874549 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion