thcrap: change directory before loading update dll on wine
thcrap: change directory before loading update dll on wine

The flag LOAD_WITH_ALTERED_SEARCH_PATH for LoadLibraryEx doesn't work
correctly on wine, so we just go to the bin directory, which adds it
to the search path.

thpatch/thcrap,thpatch/thcrap,thpatch/thcrap,thpatch/thcrap,thpatch/thcrap