Add common VHDL file extensions
Add common VHDL file extensions

wcandillon/linguist,ChaiScript/linguist,matt40k/linguist,pchaigno/linguist,mwpastore/linguist,alvarotrigo/linguist,jjatria/linguist,FStarLang/linguist,SRI-CSL/linguist,whitj00/linguist,erkyrath/linguist,osorgin/linguist,stanhu/linguist,a0viedo/linguist,douglas-larocca/linguist,mattn/linguist,JJ/linguist,Rockyspade/linguist,cybernet14/linguist,sebgod/linguist,christop/linguist,thejameskyle/linguist,martynbm/linguist,github/linguist,BerkeleyTrue/linguist,ammaraskar/linguist,meunierfrederic/octocatlinguist,tschf/linguist,MadcapJake/linguist,ppaulweber/github-linguist,igat259/linguist,assimovt/ling-ist,whitj00/linguist,sideci-sample/sideci-sample-linguist,seanders/linguist,alitalia/linguist,jrnold/linguist,ya7lelkom/linguist,nburkley/linguist,c-lipka/linguist,maxogden/linguist,chiranjeevjain/linguist,MahmoudFayed/linguist,chiranjeevjain/linguist,stanhu/linguist,sebgod/linguist,c-lipka/linguist,MadcapJake/linguist,scttnlsn/linguist,github/linguist,MahmoudFayed/linguist,cokeboL/linguist,sebgod/linguist,nburkley/linguist,bluebear94/linguist,hcutler/linguist,erkyrath/linguist,yscho/linguist,davidzchen/linguist,yyx990803/linguist,blakeembrey/linguist,hcatlin/linguist,ilyes14/linguist,R4PaSs/linguist,kr/linguist,ammaraskar/linguist,seanders/linguist,cokeboL/linguist,ya7lelkom/linguist,pchaigno/linguist,assimovt/ling-ist,iblech/linguist,phpsgi/linguist,steventhanna/linguist,alvarotrigo/linguist,wcandillon/linguist,marcojonker/test,stanhu/linguist,pchaigno/linguist,jjatria/linguist,yscho/linguist,marcojonker/test,blakeembrey/linguist,meunierfrederic/octocatlinguist,yyx990803/linguist,a0viedo/linguist,matt40k/linguist,meunierfrederic/octocatlinguist,anhongyue/test222,CoderXpert/linguist,kyoungrok0517/linguist,yyx990803/linguist,github/linguist,pchaigno/linguist,davidzchen/linguist,christop/linguist,martynbm/linguist,pcantrell/linguist,CegepVictoriaville/linguist,hcutler/linguist,R4PaSs/linguist,scttnlsn/linguist,sideci-sample/sideci-sample-linguist,jtbandes/linguist,MostAwesomeDude/linguist,mcandre/linguist,mwpastore/linguist,0a-/linguist,github/linguist,thejameskyle/linguist,jrnold/linguist,PsichiX/linguist,douglas-larocca/linguist,phpsgi/linguist,ilyes14/linguist,kyoungrok0517/linguist,pcantrell/linguist,mcandre/linguist,bluebear94/linguist,cybernet14/linguist,BerkeleyTrue/linguist,0a-/linguist,manveru/linguist,JJ/linguist,Mx7f/linguist,Mailaender/linguist,yyx990803/linguist,adamkaplan/linguist,JJ/linguist,manveru/linguist,steventhanna/linguist,anhongyue/test222,jtbandes/linguist,Ocramius/linguist,georgesuperman/linguist,ppaulweber/github-linguist,mattn/linguist,sagar290/linguist,sebgod/linguist,hcatlin/linguist,Mx7f/linguist,Rockyspade/linguist,erkyrath/linguist,georgesuperman/linguist,tschf/linguist,JJ/linguist,stanhu/linguist,PsichiX/linguist,erkyrath/linguist,osorgin/linguist,sagar290/linguist,CegepVictoriaville/linguist,SRI-CSL/linguist,iblech/linguist,FStarLang/linguist,CoderXpert/linguist,adamkaplan/linguist,alitalia/linguist,kr/linguist,MostAwesomeDude/linguist