mod_http_oauth2: Support OpenID UserInfo claims Actually filling in those details is left to another module because I don't really wanna mix in a dependency on PEP or mod_vcard here, those implementation details can be in a second module. Some might want to fill this from LDAP or something as well.

This module logs events where more than a certain amount of CPU time was
spent.

``` lua
log_cpu_threshold = 0.01 -- in seconds, so this is 10 milliseconds
```

Uses the Lua
[`os.clock()`](http://www.lua.org/manual/5.2/manual.html#pdf-os.clock)
function to estimate CPU usage.