plus these changes unhidden changes:
remove now meaning --enable-discreteaci configure option
fix ITS#451, slapd filters
Add ber_bvecadd() to support above
constify ldap_pvt_find_wildcard() and misc slapd routines
renamed some slap.h macros
likely broken something
basic structures for handing language tags and binary option
(but less actual code to actually support them). Provided
for reference only. Will not even compile.
