[gegl/gsoc2009-gpu] (20 commits) ...Merge branch 'master' into gsoc2009-gpu

[Øyvind Kolås <ok src gnome org>]

Summary of changes:

  7a7eaad... When doing in-place processing use it only once in the iter (*)
  3cffea7... Improved locking in GEGL (*)
  3bf3d2e... [buffer] Guard some multi threading code in #if #endif (*)
  ccf2d24... Fix typo in multi threading guards (s/ENABLE_MP/ENABLE_MT) (*)
  5d7bd40... Made GeglTile be a struct instead of an object (*)
  7315e30... Disable in-place processing when multi threading is enabled (*)
  52e9229... [affine] Avoid using variables in the op for intermediate c (*)
  5ddb874... Disable internals of gegl_bt() when on win32 (*)
  9a6d830... Fix typo: G_OS_WIN_32 -> G_OS_WIN32 (*)
  2a1ea08... [tile] Use g_atomic_int_inc and g_atomic_int_dec_and_test f (*)
  b95048d... [buffer] add #if ENABLE_MP guards (*)
  effba12... Use g_atomic_int_inc to increment the unique number for the (*)
  bc28410... Enabled in-place processing for point filters/composers (*)
  e3e11f3... Made the number of threads configurable. (*)
  d2c2c13... Removed unused hack for output proxy pads (*)
  9a33312... Made gegl_node_get_producer() return the graph node of meta (*)
  c9bfad4... Cleaned up API comment string inconsistencies. (*)
  7f00bee... Added syntactic sugar for graph construction for C (*)
  a1902d2... Trimmed down ang reindented csugar example (*)
  7a8398b... Merge branch 'master' into gsoc2009-gpu

(*) This commit already existed in another branch; no separate mail sent