* stepmake/stepmake/texinfo-rules.make: strip DVI support.

* stepmake/stepmake/texinfo-rules.make: strip DVI support.

* scm/framework-eps.scm (dump-stencils-as-EPSes): generate
systems.pdftex too.o

* scm/backend-library.scm (postscript->pdf): use -dEPSCrop for PDF.

* make/lilypond-vars.make (TEXINPUTS): add pdf output format.

* Documentation/topdocs/NEWS.tely (Top): add pdftex note.

* scm/output-ps.scm (resetrotation): use gsave/grestore for rotation.

* lily/main.cc (parse_argv): don't overwrite previous --formats string.

* scm/backend-library.scm (postscript->pdf): strip .eps too.