Correct wmi query types
Add option for long hostnames
Vsphere monitoring
fmt -80
Allow specifying no host

This requires changing the semantics of tags to copy and create a new map.
Vsphere datastore querying
Collect external program errors on stderr
Doc section about external collectors
Only collect railgun each minute

fixes #44
Newlines
Rearrange flag docs
Merge branch 'master' into puppet_yaml

Conflicts:
	collectors/collectors.go