EditWordBreakProc documented the third parameter as being the number
of unicode characters in the string for richedit 2.0 and up.  It turns
out that it should actually be the number of bytes in the string.

This completely fixes the print previews generated by MS Access in a Win9x
mode. Access has a custom handler for an EMR_GDICOMMENT record, and GDI APIs
it calls from it don't work properly due to wrong DC mapping.

winecfg: Update the drives only when they have changed, instead of trying to compare with the current setup.