support for TLS and SASL will be build.

Please inform me of any problems.

  AVL_CMP, AVL_DUP, AVL_FREE, AVL_APPLY.
Apply casts as needed.
Change data pointer from caddr_t to void *.

Also add initial slapd .dsw/.dsp files.  Still needs work (mainly syslog).

Suggested by Pierangelo Masarati <pmasarati@bci.it> in post to -bugs.

These functions require their arguments to be in the range of `unsigned char'.

Implementation no longer uses strtok_r(), it may be broken
or have an odd prototype.
Update configure not to check for strtok/strtok_r nor require
strtok_r to LDAP_API_FEATURE_X_OPENLDAP_REENTRANT.

* Fixed unfree'd 'char *results' in all tcl_* functions (only unfree'd in
  certain cases, moved the free to the actual function) so no more mem
  leaks. Tested this with over 500,000 access's for testing :)
* Miscellaneous source style and tabulation fixes

Slight adaption of concurrency-test to enable even more writers/readers.

  correctness of locking schemas in backends.
In back-bdb2 open NEXTID during startup and close at shutdown.

slapd server timing via a new slapd command line option '-t'.

Fix of a back-bdb2 --> back-ldbm leakage (==> new bdb2-specific DB file suffix).