Fix compile warning.

src/interfaces/ecpg/pgtypeslib/dt.h

 #ifndef DT_H
 #define DT_H
 
+#include <pgtypes_timestamp.h>
+
 #define MAXTZLEN             10
 
 #ifdef HAVE_INT64_TIMESTAMP
@@ -297,6 +299,8 @@ int	EncodeTimeOnly(struct tm * tm, fsec_t fsec, int *tzp, int style, char *str);
 int	EncodeDateTime(struct tm * tm, fsec_t fsec, int *tzp, char **tzn, int style, char *str, bool);
 int	EncodeInterval(struct tm * tm, fsec_t fsec, int style, char *str);
 
+int tm2timestamp(struct tm *, fsec_t, int *, Timestamp *);
+
 int	DecodeUnits(int field, char *lowtoken, int *val);
 bool	ClearDateCache(bool, bool, bool);
 

src/interfaces/ecpg/pgtypeslib/dt_common.c

@@ -13,8 +13,6 @@ static int day_tab[2][13] = {
 		{31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 0}};
 
 typedef long AbsoluteTime;
-
-int tm2timestamp(struct tm *, fsec_t, int *, Timestamp *);
 	
 #define ABS_SIGNBIT             ((char) 0200)
 #define POS(n)                  (n)