MultiplayerSettings no INI parsing code present

[feliwir]

Issue explanation

MultiplayerSettings are only hooked so far - for standalone the subsystem can't be initialized. The parsing table only links to an hooked symbol so far:

    {"MultiplayerSettings", (iniblockparse_t)(0x00504A90) /*&INI::parseMultiplayerSettingsDefinition*/},

(from INI.cpp)

This needs to be implemented in order for "TheMultiplayerSettings" subsystem to work in StandAlone mode.
Currently it is disabled by a hack, see #614

[xezon]

MultiplayerSettings class looks as if it should work here. Could there be a problem with the class members?

[duncanspumpkin]

Nobodies implemented the parse function for it yet.