configure: Add dependency on makefile for import libs to make sure the destination directory is created.

comdlg32: Avoid a NULL dereference when changing the file type selection of a Unicode Win3.1-style dialog.

Found by Mathias Kosch.

Mostly based on patch from Juan Lang.

Based on a patch by Juan Lang.

ME_SplitRun is only called by wrapping code. In all but one call the
returned second half of the split run will be returned, get passed back
to ME_WrapHandleRun, then ME_CalcRunExtent will be called at the start of
ME_WrapHandleRun through ME_WrapSizeRun.