qsql: move QSqlCachedResultPrivate to header

Later changes will subclass this class. Moving to the header now
for better readable patches.

Change-Id: If17607d69169aa5c449c36c9445308164e387f29
Reviewed-by: Andy Shaw <andy.shaw@theqtcompany.com>

src/sql/kernel/qsqlcachedresult.cpp

@@ -53,24 +53,6 @@ QT_BEGIN_NAMESPACE
 
 static const uint initial_cache_size = 128;
 
-class QSqlCachedResultPrivate
-{
-public:
-    QSqlCachedResultPrivate();
-    bool canSeek(int i) const;
-    inline int cacheCount() const;
-    void init(int count, bool fo);
-    void cleanup();
-    int nextIndex();
-    void revertLast();
-
-    QSqlCachedResult::ValueCache cache;
-    int rowCacheEnd;
-    int colCount;
-    bool forwardOnly;
-    bool atEnd;
-};
-
 QSqlCachedResultPrivate::QSqlCachedResultPrivate():
     rowCacheEnd(0), colCount(0), forwardOnly(false), atEnd(false)
 {

src/sql/kernel/qsqlcachedresult_p.h

@@ -89,6 +89,24 @@ private:
     QSqlCachedResultPrivate *d;
 };
 
+class QSqlCachedResultPrivate
+{
+public:
+    QSqlCachedResultPrivate();
+    bool canSeek(int i) const;
+    inline int cacheCount() const;
+    void init(int count, bool fo);
+    void cleanup();
+    int nextIndex();
+    void revertLast();
+
+    QSqlCachedResult::ValueCache cache;
+    int rowCacheEnd;
+    int colCount;
+    bool forwardOnly;
+    bool atEnd;
+};
+
 QT_END_NAMESPACE
 
 #endif // QSQLCACHEDRESULT_P_H