Added debug flag to Bridge build arguments.

1. Makes winedbg slightly less painful.
Updated Bridge logging to use WINE_* completely.

1. Removed __LOG and __TRACE, as printf'ing in a Winelib DLL doesn't
really work right (*printf is implemented by Wine and doesn't quite
function identically to native *printf, especially when outputting
to stderr).
2. Various fixes to WINE_* calls.
3. Updated all __LOG statements to use WINE_ERR or WINE_WARN.