Corrected what appears to be a long-standing error in the GDS read

routine, in which it calls the same "cleanup" routine as for CIF
files, which in turn processes the top level cell.  However, GDS
doesn't have the same concept of a top level cell, so it ends up
re-processing part of the last cell read.  This would appear to be
harmless, except that there is some kind of scaling discrepancy
in which the cell bounding box can get incorrectly scaled by the
cleanup routine.  The solution appears to be simply (?) to not do
the "top level" processing.  Bypassing the CIFPaintCurrent() from
the cleanup routine when reading a GDS file appears to solve the
problem.

cif/CIFrdcl.c

@@ -1786,8 +1786,8 @@ CIFReadCellCleanup(
     }
 
     /* Do geometrical processing on the top-level cell. */
+    if (filetype == FILE_CIF) CIFPaintCurrent(filetype);
 
-    CIFPaintCurrent(FILE_CIF);
     DBAdjustLabels(EditCellUse->cu_def, &TiPlaneRect);
     DBReComputeBbox(EditCellUse->cu_def);
     DBWAreaChanged(EditCellUse->cu_def, &EditCellUse->cu_def->cd_bbox,