(ITS#4463) New overlay - constraint

[neil.dunbar@pobox.com]

Full_Name: Neil Dunbar
Version: 2.3.20
OS: Linux (Gentoo)
URL: ftp://ftp.openldap.org/incoming/constraint.tar.gz
Submission from: (NULL) (209.200.60.124)


Enhancement code.

Provides an overlay which can constrain attributes to conform to a particular
regular expression syntax.

This is a modification of an older submission (whose ITS I can't find). I've
zapped the code involving iconv, since it was buggy and non-portable. All that
remains is the regular expression constraint.

I've also added a (minimal) manual page.