[gegl] (12 commits) Created branch xml

[Michael Muré <mmure src gnome org>]

The branch 'xml' was created.

Summary of new commits:

  43edf23... add code the parse the new XML file format
  045ecfd... xml2: remove wrong warning
  541d3bc... xml2: store the read ID in the op's name
  b339d7b... xml2: implement graph_to_xml, mostly working
  aa89026... xml2: don't serialize output proxy
  0cf49f0... add a small program to help convert xml files
  333dc06... xml2: filter gegl:nop rather than proxy node
  bab3e8f... xml test: a bit of cleaning
  8dfa308... node: add gegl_node_get_output_pads()
  5deeed2... xml2: add support to read meta ops
  9a098b7... add xml1to2 in gitignore
  1a67399... add two sample of xml v2 files