started kjellm munin plugin support
Squashed 'files/server/external/kjellm-munin-mysql/' content from commit 53ea006

git-subtree-dir: files/server/external/kjellm-munin-mysql
git-subtree-split: 53ea00609f412ac62d38ac2f0d82579a1729d9b7
Merge commit '0bd517cc7dbd18598f45c9404ccb24def2be7b37' as 'files/server/external/kjellm-munin-mysql'
added subtree