Add missing parens around $syspeer_stratum_value

Without them sys_peer_stratum was always being printed as 1
Update varnish plugin with Varnish 4 compatibility
Improve comments to say which fields are used in which version
Typo on FastCGI configuration

Second process is to start munin-cgi-html, however, the actual program pointed to munin-cgi-graph so that was incorrect
templates: Fix erroneous '>"' popping up
Merge pull request #243 from wens/serviceview-template-garbage-fix

templates: Fix erroneous '>"' popping up
Merge pull request #242 from unreal4u/patch-1

Typo on FastCGI configuration
rework yum.in

Added and enhanced
- data about securty updates
- configurable hiding options
- documentation header for munindoc
- declare own category "updates" for these sort of plugins (should be added to apt etc. also)
- change family to 'manual' as user has to setup a cronjob outside of Munin
verbose level = MUNIN_DEBUG

set the verbose level based on MUNIN_DEBUG environment variable
Update yum.in

remove superfluous output for option 'update' of plugin yum
yum.in: Fix file encoding

munindoc failed in showing character "å" and warned "POD ERRORS: Non-ASCII character seen before =encoding in 'Manns<E5>ker'."
Seems to be fixed with explicit declaration "=encoding utf8"
Merge pull request #245 from dipohl/devel

rework yum.in
Merge pull request #246 from lr1980/patch-1

verbose level = MUNIN_DEBUG
Merge pull request #237 from driskell/devel

Add Varnish 4.0.x compatibility to the varnish plugin
Merge remote branch 'pull/228' into devel

* pull/228:
  Add missing parens around $syspeer_stratum_value