* maint-1.5.4:
  svn-git: Use binmode for reading/writing binary rev maps
  diff options documentation: refer to --diff-filter in --name-status
  git-svn bug with blank commits and author file
  archive.c: format_subst - fixed bogus argument to memchr
  copy.c: copy_fd - correctly report write errors
  gitattributes: Fix subdirectory attributes specified from root directory