[libgda/LIBGDA_4.2] Replace G_CONST_RETURN with const.

[Murray Cumming <murrayc src gnome org>]

commit 4cccf28b0897e3c1338ddf6d2c250ef938c79660
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Jul 8 08:59:06 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-4.2 is still in wide use, alongside a newer glib, so this
    is a useful change.

 libgda/gda-value.c |    2 +-
 libgda/gda-value.h |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libgda/gda-value.c b/libgda/gda-value.c
index 129e110..e9436e0 100644
--- a/libgda/gda-value.c
+++ b/libgda/gda-value.c
@@ -1625,7 +1625,7 @@ gda_value_set_geometric_point (GValue *value, const GdaGeometricPoint *val)
  *
  * Returns: (transfer none): the value stored in @value.
  */
-G_CONST_RETURN GdaValueList *
+const GdaValueList *
 gda_value_get_list (const GValue *value)
 {
 	g_return_val_if_fail (value && G_IS_VALUE (value), NULL);
diff --git a/libgda/gda-value.h b/libgda/gda-value.h
index 902931a..738f04c 100644
--- a/libgda/gda-value.h
+++ b/libgda/gda-value.h
@@ -145,7 +145,7 @@ void                              gda_value_take_blob (GValue *value, GdaBlob *b
 
 const GdaGeometricPoint *gda_value_get_geometric_point (const GValue *value);
 void                              gda_value_set_geometric_point (GValue *value, const GdaGeometricPoint *val);
-G_CONST_RETURN GdaValueList      *gda_value_get_list (const GValue *value);
+const GdaValueList      *gda_value_get_list (const GValue *value);
 void                              gda_value_set_list (GValue *value, const GdaValueList *val);
 void                              gda_value_set_null (GValue *value);
 const GdaNumeric        *gda_value_get_numeric (const GValue *value);