Fixes and updates for mate-document-viewer.

Hi,

Many thanks to infirit who helped me get the build working over the last few hours on IRC.

  * Work around a build system issue.
  * DVI (`texlive-bin`) is now really optional.
  * Remove impress support as it is removed upstream.
  * Removed obsolete `configure` siwtches.
  * Added XPS support.

Regards, Martin.