[Gegl-developer] two small patches

[Henrik Akesson]

Two patches attached. I've made the below comments in a more suitable
ChangeLog format:

[gegl_buffer.diff]

Patch from Henrik Akesson:
- Extracted duplicated code from pset/pget into a separate function
gegl_buffer_in_abyss to improve readability of code and maintainability.
- Renamed pset/pget to gegl_buffer_pixel_set and gegl_buffer_pixel_get in
order to improve readability of code and to be conformant to gegl coding
standards.
* gegl/buffer/gegl_buffer_access.c
* gegl/buffer/gegl_buffer_private.h


[gegl_utils.diff]

Patch from Henrik Akesson that adds a gegl_rectangle_as string function for
retreiving a rectangle as a debug string. Log statements has been changed to
use this said function as well as using GEGL_NOTE (see gegl-debug.h).
* gegl/gegl_utils.c
* gegl/gegl_utils.h
* gegl/process/gegl_processor.c


/Henrik
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