(ITS#4997) lmpasswd support using gcrypt

[rra@stanford.edu]

Full_Name: Russ Allbery
Version: 2.4 (HEAD)
OS: Debian
URL: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=245341
Submission from: (NULL) (171.66.157.14)


Now that 2.4 has native GnuTLS support, the patch that's been sitting around in
Debian bug #245341 becomes potentially interesting (see the associated URL). 
This is a request to support LAN Manager password hashes when OpenLDAP is built
with GnuTLS instead of OpenSSL, thus requiring using libgcrypt to do the DES
work instead of OpenSSL's DES library.

The patch in that bug almost certainly isn't okay in its current form, but I
wanted to get the ITS filed for this feature request so that there's a record in
the database and just in case someone else feels inspired to bring the patch up
to date and clean it up.  (Unlikely, I know.)  Otherwise, I will probably clean
this patch up for further submission at some point near the 2.4 release (on
which side of it, I'm not sure).