Clean up mailgraph agent script; no longer needs a modified mailgraph, you can use the debian (or other) stock package. Just place the new script in the right directory and make sure the path to your rrds is correct

git-svn-id: http://observium.org/svn/observer/trunk@4528 61d68cd4-352d-0410-923a-c4978735b2b8
make sure stray whitespace doesn't kill off graph functionality; small cleanups

git-svn-id: http://observium.org/svn/observer/trunk@4530 61d68cd4-352d-0410-923a-c4978735b2b8
fix postfix mailgraph parser

git-svn-id: http://observium.org/svn/observer/trunk@4532 61d68cd4-352d-0410-923a-c4978735b2b8