[gegl/samplers] (27 commits) ...(gfloat) and (gdouble) constants + credits + cosmetic

[Nicolas Robidoux <nrobidoux src gnome org>]

Summary of changes:

  730bb91... ops: use svg: prefix for compositing operations (*)
  745352c... chant: silence gcc (*)
  ff51dba... operations: Fix set but unused variables which gcc (*)
  9d114d9... exp-combine: remove unused variable (*)
  d18db72... demosaic-simple: Remove unused variable (*)
  118ff15... map_absolute: coding style + simplification + more precise  (*)
  e405366... add a map_relative operator (*)
  5e49d73... map-relative: add a scaling factor property (*)
  1d83ff2... s/_/-/ in op filenames (*)
  147fd05... buffer: tile-backend-file replaced defines for file modes w (*)
  4d2c3a5... docs: update contribute.html (*)
  4b3d683... fix typos (*)
  11f25c2... Remove S_*GRP and S_*OTH bit flags for file access on the W (*)
  3302521... jpg-save: Add support for saving JPEG images (*)
  4388fc0... jpg-save: Add optimize property (*)
  f5f6216... GeglView: Remove unused event handling and public API (*)
  718ba3f... add anisotropic noise reduction op (*)
  28b9154... noise-reduction: use 2nd order derivative for diffusion con (*)
  86cac09... noise-reduction: only count center pixel once (*)
  be830f5... noise-reduction: combine multiple smear/smoothing strategie (*)
  ba9d282... noise-reduction: fix math of 2nd order derivative criteria (*)
  12c6b48... noise-reduction: fix couple of bugs in implementation (*)
  7a9a86e... Add plugins directory variable to gegl.pc (*)
  22b0f77... Remove most parameters (*)
  b246704... Merge branch 'samplers' (*)
  2d91e08... noise-reduction: fix symmetric logic (*)
  4430470... (gfloat) and (gdouble) constants + credits + cosmetic (*)

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