64-bit counter support and other fixes to systemPerfConf.pl

I've created patch 1744585 in Sourceforge.  This updates
systemPerfConf.pl to let you specify the SNMP version (namely v2
so you can use 64-bit counters), to detect UCD-DISKIO-MIB 64-bit
counters when present, and to work around a counter32 overflow
in the hrStorage MIB for filesystems between 2147483648 and
4294967295 bytes.  A new Defaults is also included, which has
corrected the MIB names for a few objects and some better legends
on the disk I/O graphs..

I'm thinking that future development for auto-creation of Cricket
configs should be in genDevConfig, but I haven't had the chance yet
to use it and needed the above fixes in a hurry.  I imagine it won't
be hard to turn systemPerfConf.pl into a genDevConfig plugin one day...
 
	-- Ed

-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/