Added OpenLDAP copyright to files.

Changes to support threads from libldap_r.

Updates regarding threads and names.

environment settings.

Improved ldap_int_strtok. If strtok_r does not exists, it will be worked
simulated with strspn and strpbrk. If strspn or strpbrk aren't there, they
will be supplied.
In addition, the memory-handling of the ldap_int_gethostby's is better now.

will eventually be very last).  Add lthread/lutil to libldap_r test
program linkage.

end of link.    Basic order is:
	$LDFLAGS internal-libs external-libs $LIBS $LTHREAD_LIBS

LTHREAD_LIBS is last as -lpthread (or equiv) must be last on many systems.
LIBS is next to last as some user might have put -lpthread (or equiv)
in $LIBS.

of a busy wait and allow the pthread_yield within the loop to be
removed.  This was the only pthread_yield which was necessary
when usng non-preemptive threads.  As such, the configure.in
sched_yield/pthread_yield missing error can be removed from
configure.in.  If explicit yield function is missing, just provide
a no-op replacement.
Moved declaration of various slapd globals from main.c to init.c
so they can be shared with ldbm tools.

  make depend, make tests, and make install all work when build directory
  is not the $srcdir.
Also modified library handling such that -lpthread more likely to be last.
WARNING: new orderring requires use of LDFLAGS to set global loader options
  such as -L/usr/local/lib.  If you put this in LIBS, some libraries
  may not be found a link time.
Likely broke Kerberos/LDAPD support.  Don't have those in my testbed.

- slapd's pid/args file names are based on the servers binary file names,
  providing for multiple servers beeing run on one host.
- slapd supports the -l command line parameter for selection of a
  syslog LOCAL user (-lLOCAL0 .. -lLOCAL7)
- db_appinit() is called during first ldbm_open() in DB 2.x to initialize
  DB debugging features (good to find bugs in the DB code :-)
- a patch for a non-initialized variable in DB's 2.x db_open is provided.

one preprocessor macro instead of two.  Ran aclocal, autoconf,
autoheader to update derived files.  Modify util-int.c to use
CTIME_R_NARGS define and fallback to ctime() if not set.
Made LDAP_API_FEATURE_X_OPENLDAP_REENTRANT dependent upon result.

Teached autoconf to figure out how may arguments ctime_r expects.
Updated util-int.c to use this information.

mutex declaration should be moved from slapd/main.c to slapd/init.c
so we don't have ripple changes through slapd/tools.

Introduction of ldbm_datum_init().
Patch for non-NULL pointer test befor call to ldbm_datum_free().

have not implemented ldap_get_ber_controls() helper function yet.

free the memory they have allocated, and set the arguments to NULL.

references.c: fix same bug here.  need to implement parsing.
Still need to implement chasing in cldap.c/result.c

Fixed entry step through functions to check specifically fore entries.

Add check for to configure.in vsprintf, since HAVE_VSPRINTF is presumably
what was intended there.  Finally, also protected a bunch of if test
expressions with double quotes, as they were producing illegal test
commands.

ldap_set/get_option support for controls.

Remove ldap_get_lderrno().

at runtime.