Follow-up to 61fc83fd7dd51e9a88ac7e6264692fcf561a37f7

Compatibility fix for older versions of Perl

Signed-off-by: Haru <haru@dotalux.com>
Add support for plugin options in login server config.
Add support for plugin options in char server config.
Add support for plugin options in char server config (inter-server.conf).
Add support for plugin options in map server config (inter-server.conf).
Add support for plugin options in map server config (logs.conf).
Add support for plugin options in map server config (script.conf).
In char server move config options handling by plugins into char_config_dispatch.
In login server move config options handling by plugins after all other handling.