Check_MK Werk 8567: Invertible Graphite mangling

ID: 8567 Title: Invertible Graphite mangling Component: cmc Level: 1 Class: New feature Version: 1.4.0i1 When sending performance data to Graphite, the host/service/variable part needs to be mangled. The result of the default mangling is more readable (it simply replaces special characters with an underscore), but it is not invertible. This change adds C-style mangling using the standard octal escapes ('\\ooo'), so you can reconstruct the various parts from the data sent to Graphite.