MEDIUM: cfgparse: check section maximum number of arguments

MEDIUM: cfgparse: check section maximum number of arguments

This patch checks the number of arguments of the keywords:
'global', 'defaults', 'listen', 'backend', 'frontend', 'peers' and
'userlist'

The 'global' section does not take any arguments.

Proxy sections does not support bind address as argument anymore.  Those
sections supports only an <id> argument.

The 'defaults' section didn't had any check on its arguments. It takes
an optional <name> argument.

'peers' section takes a <peersect> argument.

'userlist' section takes a <listname> argument.