Modify ldapsearch(1) significantly. Now handles LDAPv3 search

references, extended results, and extended partial results.  LDIF
extended to support these new features and reported version 2.
-L now limits output to LDIFv1 for compatibility reasons.  No
-L is now LDIFv2.  Old alternative form is no longer supported.

Use LDAP_TMPDIR (in ldap_config.h) instead of hardcoded /tmp
Use LDAP_FILE_URI_PREFIX (in ldap_config.h) instead of hardcoded
	file://tmp/