Log Message:
thunderbird's ldap doesn't work talking to an ipv4 ldap server if
talking to ipv4 addresses using ipv6 addresses isn't allowed, which is
the default on NetBSD.  Patch to use a v4 socket when talking to an ipv4
ldap server.  Fixes my PR 33511.
seamonkey/firefox/sunbird have the same code so make the same patch.
OKed ghen.  Bump PKGREVISION.