* 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