Crash with error code 11 on various keys/combinations about synergy-core

[Brynyard]

After trying to override the lang value Synergy infers I discovered that a) that ain't possible and b) Synergy seems to assume the keyboard language (KLID) is always the same as the input locale (HKL), ref AppUtilsWindows.cpp:210+. This is probably usually true, but as I write code for a living and given Windows' horribly bad Norwegian translation, I tend to use the english edition of Windows with a Norwegian keyboard (and given all the bug reports about this I'm not alone).

Instead of looking up the national code from the locale using GetKeyboardLayout, please look up the keyboard layout id via the GetKeyboardLayoutName function instead.