ogr2ogr: turn string value to one element list if destination field is stringlist

git-svn-id: https://svn.osgeo.org/gdal/trunk@27288 f0d54148-0727-0410-94bb-9a71ac55c965
NAS:
* implement wfs:update (adds new context 'update' and fields "endet" and
  "anlass" to "delete" layer).
* also assign xlink:href attributes as layer attribute (not only
  in "alkis_beziehungen" layer; closes #5372)
* fix driver page title
* cosmetics: remove trailing whitespaces

git-svn-id: https://svn.osgeo.org/gdal/trunk@27289 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_travis_macosx