exit 0 and some notices ...

Add exit 0
# WARNING : Samba 3.6 and newer block access to smbstatus for no root user
# On Debian make a "chmod a+w /run/samba/sessionid.tdb" 
# smbstatus must open this file with RW option
added plugins to monitoring Mysql HandlerSocket connections
Added memory graphing and swapwait cpu graph
Avoid bashism
Clean field name

Spaces are illegal in munin field names, so clean the name of the encoder before using it.
add standard squid env config vars
Merge pull request #535 from asgh/patch-2

Clean field name
Merge pull request #536 from smith153/master

add standard squid env config vars
fixed graph category, graph types
Add automated tests
run "apt-get update", and keep install minimal
Add libvirt and berkeleydb development libraries
use a non-versioned package
Use a specific version of Sys::Virt

 - to match operatingsystem
 - also get build deps
adjust build dependencies for Sys::Virt
Add "pylint" for syntax checks
split install lines, to keep sane
Add more test dependencies
Add "XML::LibXML" to test dependencies
Add some POE libs to test dependencies