Various small patches (ITS#1735)

[h.b.furuseth@usit.uio.no]

Full_Name: Hallvard B. Furuseth
Version: HEAD (2002-04-08)
OS: Linux
URL: http://folk.uio.no/hbf/OpenLDAP/various.txt
Submission from: (NULL) (158.36.148.34)


1. #include <ldap_pvt.h> in slurpd/main.c, to declare the functions
   ldap_pvt_tls_init() and ldap_pvt_tls_init_def_ctx().
2. null_back_db_init() was extern in externs.h but static in null.c.
3. struct slap_conn.c_authc_backend is unused.
4. some manual typos.