Localized strings must not contain preprocessor macros.

* subversion/libsvn_fs_x/noderevs.c
  (svn_fs_x__noderevs_get,
   read_reps): use the double-escape trick for localized strings
               as we already do in other places

* subversion/libsvn_fs_x/changes.c
  (svn_fs_x__changes_get_list): ditto

* subversion/svnserve/serve.c
  (log_cmd): ditto

* subversion/libsvn_fs_x/index.c
  (l2p_page_get_offset): ditto; had to provide a pool
  (l2p_page_access_func,
   l2p_index_lookup): update callers

Found by: Mattias Engdegård <mattiase@bredband.net>

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1533970 13f79535-47bb-0310-9956-ffa450edef68