icons, libgimpwidgets: gimp-buffer icons renamed to edit-copy...

... and GIMP_STOCK_BUFFER redefined to "edit-paste", half-reverting
commit cb7d93d (except we use standard Freedesktop icon naming instead
of the GTK stock name).
The gimp-buffer icon was indeed definitely looking like a typical copy
icon, which was missing, and this has priority over a buffer icon.

icons/icon-list.mk

@@ -7,6 +7,7 @@ scalable_images = \
 	scalable/document-save.svg					\
 	scalable/document-save-as.svg				\
 	scalable/edit-clear.svg						\
+	scalable/edit-copy.svg						\
 	scalable/edit-cut.svg						\
 	scalable/edit-paste.svg						\
 	scalable/edit-redo.svg						\
@@ -56,7 +57,6 @@ scalable_images = \
 	scalable/gtk-yes.svg						\
 												\
 	scalable/gimp-anchor.svg			\
-	scalable/gimp-buffer.svg			\
 	scalable/gimp-cap-butt.svg			\
 	scalable/gimp-cap-round.svg			\
 	scalable/gimp-cap-square.svg			\
@@ -494,6 +494,7 @@ icons16_images = \
 	16/document-save.png						\
 	16/document-save-as.png						\
 	16/edit-clear.png							\
+	16/edit-copy.png							\
 	16/edit-cut.png								\
 	16/edit-paste.png							\
 	16/edit-redo.png							\
@@ -538,7 +539,6 @@ icons16_images = \
 	16/gtk-yes.png								\
 												\
 	16/gimp-anchor.png							\
-	16/gimp-buffer.png							\
 	16/gimp-cap-butt.png						\
 	16/gimp-cap-round.png						\
 	16/gimp-cap-square.png						\

libgimpwidgets/gimpicons.c

@@ -140,7 +140,6 @@ static const GtkStockItem gimp_stock_items[] =
   { GIMP_STOCK_TEXT_DIR_RTL,             NULL,        0, 0, LIBGIMP_DOMAIN },
   { GIMP_STOCK_PRINT_RESOLUTION,         NULL,        0, 0, LIBGIMP_DOMAIN },
   { GIMP_STOCK_PATTERN,                  NULL,        0, 0, LIBGIMP_DOMAIN },
-  { GIMP_STOCK_BUFFER,                   NULL,        0, 0, LIBGIMP_DOMAIN },
 
   { GIMP_STOCK_CONVERT_RGB,              NULL,        0, 0, LIBGIMP_DOMAIN },
   { GIMP_STOCK_CONVERT_GRAYSCALE,        NULL,        0, 0, LIBGIMP_DOMAIN },

libgimpwidgets/gimpicons.h

@@ -112,7 +112,6 @@ G_BEGIN_DECLS
 #define GIMP_STOCK_LINE_SPACING             "gimp-line-spacing"
 #define GIMP_STOCK_PRINT_RESOLUTION         "gimp-print-resolution"
 #define GIMP_STOCK_PATTERN                  "gimp-pattern"
-#define GIMP_STOCK_BUFFER                   "gimp-buffer"
 
 #define GIMP_STOCK_TEXT_DIR_LTR             "gimp-text-dir-ltr"
 #define GIMP_STOCK_TEXT_DIR_RTL             "gimp-text-dir-rtl"
@@ -301,6 +300,7 @@ G_BEGIN_DECLS
 /*  missing icons:  */
 
 #define GIMP_STOCK_BRUSH                    GIMP_STOCK_TOOL_PAINTBRUSH
+#define GIMP_STOCK_BUFFER                   "edit-paste"
 #define GIMP_STOCK_DETACH                   GTK_STOCK_CONVERT
 #define GIMP_STOCK_GRADIENT                 GIMP_STOCK_TOOL_BLEND
 #define GIMP_STOCK_MYPAINT_BRUSH            GIMP_STOCK_TOOL_MYPAINT_BRUSH