Commit Briefs
change the 'condensed' style to include the size of the request too
will be used in the future to log how much byte a titan request uploaded.
rename ge -> gemexp
gemserv is already taken...
allow to change the logging style; introduce some new ones
add `log style <style>'; The old default is called `legacy' now, a new default format is added called `condensed', and `common' and `combined' to mimick Apache httpd and nginx (respectively) are also added.