[gegl/samplers] (9 commits) ...clearer comments

[Nicolas Robidoux <nrobidoux src gnome org>]

Summary of changes:

  7445dff... more careful gfloat and gdouble casting (*)
  ac809dc... refactor to make inner function portable C (*)
  b54e5b2... samples: fix compilation (*)
  465fe42... remove the two obviously losing minmod candidates + clean u (*)
  b574017... add documentation on the header of each subclasses of GeglO (*)
  e14974c... Define fsync to _commit on the Windows platform (*)
  c04731f... lohalo.c: winning minmod macro activated (*)
  39bf45c... cosmetic (*)
  bc53ca6... clearer comments (*)

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