[libgda] Replace G_CONST_RETURN with const.

[Murray Cumming <murrayc src gnome org>]

commit f5970385081b158104f201764c0582f5f7b4e718
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Jun 15 08:50:08 2011 +0200

    Replace G_CONST_RETURN with const.
    
    * libgda/gda-value.[h|c]: G_CONST_RETURN is now deprecated, and
    was just a const keyword anyway.

 libgda/gda-value.c |    8 ++++----
 libgda/gda-value.h |   12 ++++++------
 2 files changed, 10 insertions(+), 10 deletions(-)
---
diff --git a/libgda/gda-value.c b/libgda/gda-value.c
index 20cbbed..fcddcee 100644
--- a/libgda/gda-value.c
+++ b/libgda/gda-value.c
@@ -1454,7 +1454,7 @@ gda_value_copy (const GValue *value)
  *
  * Returns: (transfer none): the value stored in @value.
  */
-G_CONST_RETURN GdaBinary *
+const GdaBinary *
 gda_value_get_binary (const GValue *value)
 {
 	GdaBinary *val;
@@ -1533,7 +1533,7 @@ gda_value_set_blob (GValue *value, const GdaBlob *blob)
  *
  * Returns: (transfer none): the value stored in @value.
  */
-G_CONST_RETURN GdaBlob *
+const GdaBlob *
 gda_value_get_blob (const GValue *value)
 {
 	GdaBlob *val;
@@ -1571,7 +1571,7 @@ gda_value_take_blob (GValue *value, GdaBlob *blob)
  *
  * Returns: (transfer none): the value stored in @value.
  */
-G_CONST_RETURN GdaGeometricPoint *
+const GdaGeometricPoint *
 gda_value_get_geometric_point (const GValue *value)
 {
 	g_return_val_if_fail (value, NULL);
@@ -1616,7 +1616,7 @@ gda_value_set_null (GValue *value)
  *
  * Returns: (transfer none): the value stored in @value.
  */
-G_CONST_RETURN GdaNumeric *
+const GdaNumeric *
 gda_value_get_numeric (const GValue *value)
 {
 	g_return_val_if_fail (value, NULL);
diff --git a/libgda/gda-value.h b/libgda/gda-value.h
index 74ee2d3..fb1c6fd 100644
--- a/libgda/gda-value.h
+++ b/libgda/gda-value.h
@@ -203,26 +203,26 @@ gboolean                          gda_value_is_null (const GValue *value);
 gboolean                          gda_value_is_number (const GValue *value); 
 GValue                           *gda_value_copy (const GValue *value);
 
-G_CONST_RETURN GdaBinary         *gda_value_get_binary (const GValue *value);
+const GdaBinary         *gda_value_get_binary (const GValue *value);
 void                              gda_value_set_binary (GValue *value, const GdaBinary *binary);
 void                              gda_value_take_binary (GValue *value, GdaBinary *binary);
 
-G_CONST_RETURN GdaBlob           *gda_value_get_blob (const GValue *value);
+const GdaBlob           *gda_value_get_blob (const GValue *value);
 void                              gda_value_set_blob (GValue *value, const GdaBlob *blob);
 void                              gda_value_take_blob (GValue *value, GdaBlob *blob);
 
-G_CONST_RETURN GdaGeometricPoint *gda_value_get_geometric_point (const GValue *value);
+const GdaGeometricPoint *gda_value_get_geometric_point (const GValue *value);
 void                              gda_value_set_geometric_point (GValue *value, const GdaGeometricPoint *val);
 void                              gda_value_set_null (GValue *value);
-G_CONST_RETURN GdaNumeric        *gda_value_get_numeric (const GValue *value);
+const GdaNumeric        *gda_value_get_numeric (const GValue *value);
 void                              gda_value_set_numeric (GValue *value, const GdaNumeric *val);
 gshort                            gda_value_get_short (const GValue *value);
 void                              gda_value_set_short (GValue *value, const gshort val);
 gushort                           gda_value_get_ushort (const GValue *value);
 void                              gda_value_set_ushort (GValue *value, const gushort val);
-G_CONST_RETURN GdaTime           *gda_value_get_time (const GValue *value);
+const GdaTime           *gda_value_get_time (const GValue *value);
 void                              gda_value_set_time (GValue *value, const GdaTime *val);
-G_CONST_RETURN GdaTimestamp      *gda_value_get_timestamp (const GValue *value);
+const GdaTimestamp      *gda_value_get_timestamp (const GValue *value);
 void                              gda_value_set_timestamp (GValue *value, const GdaTimestamp *val);