MOO Server Extensions:
  - Logical xor
 
  - us_time (time() value with microseconds)
 
  - proc_size (returns the current process size on systems with /proc filesystem)
 
  - nprogs (returns the number of programmed verbs in the db or on an object)
 
  - random_of (same as 
[random($)], but statistically faster)
 
  - enlist (if the argument isn't a list, wrap a list around it)
 
  - explode (same as $string_utils:explode. Disabled due to unresolved memory leak.)
 
  - panic (panic the server with a given message)
 
  - isa (same as $object_utils:isa)
 
  - iassoc
 
  - assoc
 
  - sort
 
  - make
 
  - slice
 
  - remove_duplicates
 
All function the same as their $list_utils counterparts.
  - gdbm_open
 
  - gdbm_close
 
  - gdbm_store
 
  - gdbm_fetch
 
  - gdbm_delete
 
  - gdbm_exists
 
  - gdbm_sync
 
  - gdbm_closeall
 
  - gdbm_find_keys
 
  - gdbm_num_keys
 
Used with the 
Generic Disk-Based Database Utilities.
ext-zlib.c - Provides access to the zlib compression library.
 
  - zlib_compress
 
  - zlib_uncompress