Remove all Berkeley DB specific wording from FSFS repositories. Two components:  (a) 'README.txt' - show the advice about 'db/DB_CONFIG' only for BDB.  (b) 'locks/db.lock' and 'locks/db-logs.lock' - Use content stating that these      files are unused and exist only for pre-1.3 compatibility, for FSFS      repositories. Resolves issue 2389.
Remove all Berkeley DB specific wording from FSFS repositories.
Two components:
 (a) 'README.txt' - show the advice about 'db/DB_CONFIG' only for BDB.
 (b) 'locks/db.lock' and 'locks/db-logs.lock' - Use content stating that these
     files are unused and exist only for pre-1.3 compatibility, for FSFS
     repositories.
Resolves issue 2389.

* subversion/libsvn_repos/repos.c
  (bdb_lock_file_contents, bdb_logs_lock_file_contents): Text for files in
    repository 'locks/' directory moved to these variables, and line endings
    fixed from "\n" to APR_EOL_STR.
  (pre12_compat_unneeded_file_contents): New text placed in 'locks/db.lock'
    and 'locks/db-logs.lock' for FSFS repositories.
  (create_db_logs_lock, create_db_lock): Refer to previously mentioned
    variables.
  (create_repos_structure): Place BDB-specific information into 'README.txt'
    only if the contained filesystem really is BDB.
  (svn_repos_create): Initialize repos->fs_type earlier so that it is
    available to create_repos_structure().


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@856385 13f79535-47bb-0310-9956-ffa450edef68

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