[ZendTo] rrd fixes

[Jules]

I've found and fixed the problems you've all been having with 
rrdInit.php and rrdUpdate.php.

Attached are new copies of
     /opt/zendto/sbin/rrdInit.php
     /opt/zendto/sbin/rrdUpdate.php
     /opt/zendto/lib/MySQL.php
     /opt/zendto/lib/SQLite.php
You will probably need to delete your RRD data file 
(/var/zendto/rrd/zendto.rrd by default) first, and then copy in the 4 
files. Then run
     /opt/zendto/sbin/rrdInit.php /opt/zendto/config/preferences.php
     /opt/zendto/sbin/rrdUpdate.php /opt/zendto/config/preferences.php

The rrdInit script creates the data file if necessary and updates it 
with all the latest stats.
The rrdUpdate script just creates all the graphs.

Sorry it's taken me so long to work out the solution to this!

Jules

-- 
Julian Field MEng CITP CEng
www.Zend.To

Follow me at twitter.com/JulesFM
PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654

'Teach a man to reason, and he will think for a lifetime.' - Phil Plait
'All programs have a desire to be useful' - Tron, 1982

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