#ifdef SLAP_CONTROL_AVAILABILITY_KLUDGE
for now.  Me think its still needed (at least for FRONTEND controls).

also still need to clear mr's from the ad_map.)

Use LDAP_SLISTs instead of per-struct list management for schema structs
misc cleanup and lint removal

Converted ch_malloc, ch_calloc and ch_realloc calls to SLAP_MALLOC and
SLAP_CALLOC in add_value/add_value_one functions and propagated errors to
all functions that use these functions.

of rule uses, but also in test_filter_mra()

Don't yet list ordering rules yet, these require special attention (and
hence are not marked MR_EXT yet)