version: improve devel spec version parsing
version: improve devel spec version parsing

term this 'devel spec version style';
also improve dash version style parsing

MikeMcQuaid/brew,pseudocody/brew,sjackman/homebrew,JCount/brew,sjackman/homebrew,bfontaine/brew,nandub/brew,gregory-nisbet/brew,palxex/brew,DomT4/brew,JCount/brew,alyssais/brew,maxim-belkin/brew,reelsense/brew,MikeMcQuaid/brew,muellermartin/dist,mahori/brew,pseudocody/brew,nandub/brew,konqui/brew,hanxue/linuxbrew,Homebrew/brew,vitorgalvao/brew,jmsundar/brew,vitorgalvao/brew,EricFromCanada/brew,vitorgalvao/brew,Linuxbrew/brew,aw1621107/brew,palxex/brew,mgrimes/brew,muellermartin/dist,bfontaine/brew,reitermarkus/brew,reitermarkus/brew,alyssais/brew,jmsundar/brew,Homebrew/brew,ilovezfs/brew,konqui/brew,aw1621107/brew,reelsense/brew,amar-laksh/brew_sudo,mahori/brew,gregory-nisbet/brew,mahori/brew,claui/brew,konqui/brew,aw1621107/brew,ilovezfs/brew,reitermarkus/brew,Homebrew/brew,sjackman/homebrew,pseudocody/brew,Linuxbrew/brew,bfontaine/brew,DomT4/brew,EricFromCanada/brew,maxim-belkin/brew,claui/brew,amar-laksh/brew_sudo,JCount/brew,palxex/brew,MikeMcQuaid/brew,EricFromCanada/brew,nandub/brew,reitermarkus/brew,DomT4/brew,alyssais/brew,jmsundar/brew,vitorgalvao/brew,konqui/brew,gregory-nisbet/brew,EricFromCanada/brew,reelsense/brew,hanxue/linuxbrew,mgrimes/brew,nandub/brew,hanxue/linuxbrew,maxim-belkin/brew,claui/brew,JCount/brew,mahori/brew,mgrimes/brew,ilovezfs/brew,DomT4/brew,amar-laksh/brew_sudo,MikeMcQuaid/brew,Linuxbrew/brew,Linuxbrew/brew,muellermartin/dist,sjackman/homebrew,claui/brew,Homebrew/brew