Add support for create and append_to
Add support for create and append_to

Original git commit by Alexander Larsson <alexl@redhat.com> at 1189590072 +0200

svn path=/trunk/; revision=938

thiblahute/gvfs,halfline/gvfs,gicmo/gvfs,gicmo/gvfs,xkahn/gvfs-cmis,thiblahute/gvfs,philipl/gvfs,philipl/gvfs,xkahn/gvfs-cmis,philipl/gvfs,xkahn/gvfs-cmis,gicmo/gvfs,xkahn/gvfs-cmis,gicmo/gvfs,halfline/gvfs,halfline/gvfs,cpatulea/gvfs,cpatulea/gvfs