Added an error message when writing GDS if any cell being written

still has the default "(UNNAMED)" cell name;  this is not strictly
an error, but is almost certainly not what the user intended.

VERSION

@@ -1 +1 @@
-8.3.224
+8.3.225

calma/CalmaWrite.c

@@ -879,6 +879,17 @@ calmaProcessDef(def, outf, do_library)
 	    return (0);
     }
 
+    /*
+     * Flag an error if attempting to write the default (UNNAMED) cell
+     * into GDS.  This is not strictly an error but is almost certainly
+     * not what the user intended.
+     */
+
+    if (!strcmp(def->cd_name, UNNAMED))
+    {
+	TxError("Error:  Cell has the default name \"%s\"!\n", UNNAMED);
+    }
+
     /*
      * Check if this is a read-only file that is supposed to be copied
      * verbatim from input to output.  If so, do the direct copy.  If