(ITS#8692) back-sock does not create LDAP_MOD_INCREMENT message

Full_Name: Version: OS: URL: Submission from: (NULL) (85.115.23.42)

back-sock does not generate a MODIFY message with "increment:" line when LDAP clients sends modify operation with LDAP_MOD_INCREMENT.

Example of incomplete message (incrementing attribute gidNumber):

----------------------------- snip ----------------------------- MODIFY msgid: 119 binddn: uid=msin,cn=ae,ou=ae-dir peername: PATH=/usr/local/openldap/var/run/ldapi ssf: 256 connid: 1025 suffix: ou=ae-dir dn: ou=ae-dir gidNumber: 1 -

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