Corrected the dereferencing code from the last commit, where the

flag definition had been put in database.h instead of database.h.in,
and so was deleted on "make clean".  Also, corrected a problem that
causes the cif output style to be lost when running DRC-CIF checks
if the first output style is the DRC style.

database/database.h.in

@@ -391,6 +391,9 @@ typedef struct celldef
  *	    with the option "gds readonly true".
  *	CDVISITED indicates that at least one instance of the cell was
  *	    already output during a file write.
+ *	CDDEREFERENCE is a flag indicating that when loading or expanding
+ *	    children of a cell, the path should be ignored and the cell
+ *	    path should be searched for the location.
  */
 
 #define	CDAVAILABLE	 0x0001
@@ -408,6 +411,7 @@ typedef struct celldef
 #define CDPROCESSEDGDS	 0x1000
 #define CDVENDORGDS	 0x2000
 #define CDVISITED	 0x4000
+#define CDDEREFERENCE	 0x8000
 
 /*
  * Description of an array.