Fixed CE build of sqlite3

The updated sqlite3 lacks a forward declaration of localtime.
Depending on the CE version that forward declaration
was sometimes available.

Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
(forward-ported from commit fb1649d30b)

Change-Id: Ief6d8ed1cad51fa92a333a20c5dfe781d19761eb
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
(forward-ported from commit ea70ec8711)
Reviewed-by: Björn Breitmeyer <bjoern.breitmeyer@kdab.com>
Reviewed-by: Mark Brand <mabrand@mabrand.nl>

src/3rdparty/sqlite/sqlite3.c

@@ -14423,6 +14423,10 @@ static void clearYMD_HMS_TZ(DateTime *p){
 #define HAVE_LOCALTIME_S 1
 #endif
 
+#if SQLITE_OS_WINCE >= 1
+struct tm *__cdecl localtime(const time_t *t);
+#endif
+
 #ifndef SQLITE_OMIT_LOCALTIME
 /*
 ** The following routine implements the rough equivalent of localtime_r()