- replace 4Suite by lxml
  - use new None type
  - store Partial Data in CDATA node instead a Comment node (avoid replacement of '--' by '@-@@-@')
  - list type are loads with marshaler
  - several optimisations, clean useless code
  - testERP5SyncML ran 33% faster than before.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@25205 20353a03-c40f-0410-a6d1-a30d3c3de9de