t / t5100 / rfc2047-info-0004on commit xdiff/xprepare: improve O(n*m) performance in xdl_cleanup_records() (27af01d)
   1Author: Nathaniel Borenstein (םולש ןב ילטפנ)
   2Email: nsb@thumper.bellcore.com
   3Subject: Test of new header generator
   4