[docs] Use DejaVu font for PDF docs
[docs] Use DejaVu font for PDF docs

Thus, font for text will match with font for included graphics.

Besides, this fixes an issue with from ≠ character when using the
XeLaTeX default fonts:

    Missing character: There is no ≠ in font [lmroman10-regular]:mapping=tex-text;!

vigna/scipy,lhilt/scipy,ilayn/scipy,lhilt/scipy,aarchiba/scipy,rgommers/scipy,lhilt/scipy,aarchiba/scipy,Eric89GXL/scipy,gfyoung/scipy,vigna/scipy,andyfaff/scipy,zerothi/scipy,ilayn/scipy,jamestwebber/scipy,matthew-brett/scipy,aeklant/scipy,WarrenWeckesser/scipy,endolith/scipy,jamestwebber/scipy,WarrenWeckesser/scipy,gertingold/scipy,scipy/scipy,WarrenWeckesser/scipy,Stefan-Endres/scipy,endolith/scipy,andyfaff/scipy,gfyoung/scipy,ilayn/scipy,tylerjereddy/scipy,tylerjereddy/scipy,grlee77/scipy,WarrenWeckesser/scipy,perimosocordiae/scipy,ilayn/scipy,grlee77/scipy,anntzer/scipy,e-q/scipy,nmayorov/scipy,zerothi/scipy,endolith/scipy,Stefan-Endres/scipy,pizzathief/scipy,arokem/scipy,e-q/scipy,pizzathief/scipy,Stefan-Endres/scipy,perimosocordiae/scipy,aeklant/scipy,zerothi/scipy,Stefan-Endres/scipy,scipy/scipy,rgommers/scipy,ilayn/scipy,gertingold/scipy,gertingold/scipy,matthew-brett/scipy,rgommers/scipy,scipy/scipy,endolith/scipy,nmayorov/scipy,mdhaber/scipy,zerothi/scipy,andyfaff/scipy,mdhaber/scipy,andyfaff/scipy,vigna/scipy,jamestwebber/scipy,grlee77/scipy,anntzer/scipy,person142/scipy,aeklant/scipy,jor-/scipy,mdhaber/scipy,perimosocordiae/scipy,person142/scipy,gertingold/scipy,mdhaber/scipy,scipy/scipy,Eric89GXL/scipy,Stefan-Endres/scipy,endolith/scipy,pizzathief/scipy,pizzathief/scipy,anntzer/scipy,tylerjereddy/scipy,mdhaber/scipy,perimosocordiae/scipy,Eric89GXL/scipy,andyfaff/scipy,rgommers/scipy,jor-/scipy,grlee77/scipy,tylerjereddy/scipy,aarchiba/scipy,nmayorov/scipy,gfyoung/scipy,nmayorov/scipy,jor-/scipy,gfyoung/scipy,e-q/scipy,arokem/scipy,mdhaber/scipy,jamestwebber/scipy,pizzathief/scipy,aeklant/scipy,rgommers/scipy,zerothi/scipy,aarchiba/scipy,person142/scipy,arokem/scipy,aarchiba/scipy,perimosocordiae/scipy,jor-/scipy,anntzer/scipy,anntzer/scipy,jamestwebber/scipy,gertingold/scipy,tylerjereddy/scipy,matthew-brett/scipy,jor-/scipy,person142/scipy,Eric89GXL/scipy,e-q/scipy,perimosocordiae/scipy,arokem/scipy,WarrenWeckesser/scipy,vigna/scipy,nmayorov/scipy,gfyoung/scipy,arokem/scipy,ilayn/scipy,Eric89GXL/scipy,anntzer/scipy,e-q/scipy,grlee77/scipy,zerothi/scipy,andyfaff/scipy,lhilt/scipy,matthew-brett/scipy,scipy/scipy,matthew-brett/scipy,WarrenWeckesser/scipy,lhilt/scipy,vigna/scipy,aeklant/scipy,Eric89GXL/scipy,person142/scipy,Stefan-Endres/scipy,endolith/scipy,scipy/scipy