After the fix at fe06ef0e, several converter chains to DVI
(dviluatex) were broken because they had previously gone through an
incorrect link in the chain.
This commit adds converters for the above formats to dviluatex and
fixes the following ctests:
export/examples/Literate_dvi3_texF
export/examples/Literate_dvi3_systemF
export/examples/knitr_dvi3_texF
export/examples/knitr_dvi3_systemF
export/examples/lilypond_dvi3_texF
export/examples/lilypond_dvi3_systemF
export/examples/noweb2lyx_dvi3_texF
export/examples/noweb2lyx_dvi3_systemF
export/examples/sweave_dvi3_texF
export/examples/sweave_dvi3_systemF
export/templates/RJournal_dvi3_texF