Add support for client UI language override with meridian.ini Falls back to Windows set language detection if no or unknown language is found in meridian.ini.

PLEASE TEST WITH WINDOWS XP, I AM NOT SURE IF THE FUNCTION I USED FOR SETTING THE UI LANGUAGE WORKS BELOW WINDOWS VISTA!

0 = english
1 = german

[Interface]
Language=0
Removed WrapShutdown() coming from another fork I worked with
winmsg.c correct change, this time...