Log Message:
update to bozohttpd 20090522.  change include:
        o  close more leaking file descriptors for CGI and daemon mode
        o  add subdirs for build "debug" and "small" versions
        o  clean up a bad merge / duplicate code
        o  make mmap() usage portable, fixes linux & ranges: support
        o  document the -f option
        o  daemon mode now serves 6 files per child