aren't loaded at slap_init() time

using LDAP_DEVEL (to indicate experimental) to enable experimental features
(true for HEAD unless LDAP_REL_ENG is defined)

added attr_merge/value_add functions that dela with single attribute; bervals for '*', '+' and '1.1' made available

Coverted LDAP_LOG macro to use subsystem ID int values instead of string values

liblber:ber_bvarray_{add,free}.

improvements to monitor backend: added a log entry that lists the current log level and can be modified via protocol at runtime, to change the log level; minor improvements; fixed a problem in dealing with dn normalization

ad_find_lang() to search an AttributeType for a given language variant.
(Will be used in back-bdb/back-ldbm index code...)

trival other cleanup.