[gegl] operations: improve descriptions of gegl:buffer-sink and gegl:write-buffer.

[Øyvind Kolås <ok src gnome org>]

commit 48a1a1fe227991bf5a66990f65af08f01d138fb6
Author: Jehan <jehan girinstud io>
Date:   Fri Aug 1 18:45:34 2014 +0000

    operations: improve descriptions of gegl:buffer-sink and gegl:write-buffer.
    
    It was not clear what was different from the descriptions. Worse,
    gegl:buffer-sink's description was misleading by writing that the buffer
    property was "an already existing GEGL buffer", whereas a new buffer was
    in fact allocated.

 operations/common/buffer-sink.c  |    2 +-
 operations/common/write-buffer.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/operations/common/buffer-sink.c b/operations/common/buffer-sink.c
index fdeaa4a..a0e9f6f 100644
--- a/operations/common/buffer-sink.c
+++ b/operations/common/buffer-sink.c
@@ -81,7 +81,7 @@ gegl_op_class_init (GeglOpClass *klass)
       "name",       "gegl:buffer-sink",
       "title",      _("Buffer Sink"),
       "categories", "programming:output",
-      "description", _("Write the resulting rendering to an already existing GEGL buffer."),
+      "description", _("Create a new GEGL buffer to write the resulting rendering."),
       NULL);
 }
 
diff --git a/operations/common/write-buffer.c b/operations/common/write-buffer.c
index c924734..b4ffc55 100644
--- a/operations/common/write-buffer.c
+++ b/operations/common/write-buffer.c
@@ -146,7 +146,7 @@ gegl_op_class_init (GeglOpClass *klass)
     "name",        "gegl:write-buffer",
     "title",       _("Write Buffer"),
     "categories" , "programming:output",
-    "description", _("A GEGL buffer destination surface."),
+    "description", _("Write input data into an existing GEGL buffer destination surface."),
     NULL);
 }