Ticket 419 - logconv.pl - improve memory management
    
    Bug Description:  logconv.pl memory usage is very high, and doesn't
                      appear to be efficient.
    
    Fix Description:  For verbose stats/hashes/arrays we now write this
                      information to disk, and read it in and process it
                      when printing the report.  This dramatically improved
                      memory growth when dealing with larger and larger log sets.
    
                      Also updated the oids which some were incorrect, but
                      many new oids were missing.  Added stats for "Paged Searches",
                      and "Max BER size exceeded".
    
                      Finally, renamed most variables to be readable names,
                      removed redundant counters, and other generic imrpovements.
    
    https://fedorahosted.org/389/ticket/419
    
    Reviewed by: Noriko(Thanks!)
    (cherry picked from commit 16651d642bf6f7ba624f62cac867b495253b4f3f)
    (cherry picked from commit 9866682da7fb35e16922d94404c4265701fc797a)