* subversion/libsvn_fs_base/bdb/env.c   (bdb_error_gatherer): Improve the default error code.
* subversion/libsvn_fs_base/bdb/env.c
  (bdb_error_gatherer): Improve the default error code.

    This was motivated by the following error (on users@):
    svnadmin: E000000: bdb: Program version 5.1 doesn't match environment version 4.4

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1495428 13f79535-47bb-0310-9956-ffa450edef68

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