Don't say "Unpacking" if installing from directory
Don't say "Unpacking" if installing from directory

Fixes: GH-2187

techtonik/pip,alex/pip,fiber-space/pip,rouge8/pip,natefoo/pip,pypa/pip,RonnyPfannschmidt/pip,xavfernandez/pip,supriyantomaftuh/pip,ChristopherHogan/pip,sbidoul/pip,haridsv/pip,esc/pip,squidsoup/pip,qbdsoft/pip,graingert/pip,rouge8/pip,mindw/pip,pjdelport/pip,yati-sagade/pip,erikrose/pip,qbdsoft/pip,alex/pip,techtonik/pip,dstufft/pip,davidovich/pip,erikrose/pip,sigmavirus24/pip,fiber-space/pip,yati-sagade/pip,esc/pip,supriyantomaftuh/pip,prasaianooz/pip,ncoghlan/pip,ncoghlan/pip,dstufft/pip,pfmoore/pip,blarghmatey/pip,jasonkying/pip,graingert/pip,chaoallsome/pip,James-Firth/pip,jamezpolley/pip,KarelJakubec/pip,natefoo/pip,supriyantomaftuh/pip,zorosteven/pip,rouge8/pip,davidovich/pip,ianw/pip,sigmavirus24/pip,pypa/pip,zenlambda/pip,harrisonfeng/pip,ncoghlan/pip,zorosteven/pip,tdsmith/pip,habnabit/pip,graingert/pip,sbidoul/pip,prasaianooz/pip,luzfcb/pip,mujiansu/pip,wkeyword/pip,nthall/pip,ChristopherHogan/pip,willingc/pip,patricklaw/pip,jythontools/pip,jmagnusson/pip,James-Firth/pip,chaoallsome/pip,caosmo/pip,rbtcollins/pip,zvezdan/pip,caosmo/pip,jmagnusson/pip,natefoo/pip,tdsmith/pip,h4ck3rm1k3/pip,benesch/pip,patricklaw/pip,jamezpolley/pip,esc/pip,techtonik/pip,KarelJakubec/pip,rbtcollins/pip,harrisonfeng/pip,sigmavirus24/pip,pradyunsg/pip,xavfernandez/pip,benesch/pip,James-Firth/pip,luzfcb/pip,ChristopherHogan/pip,tdsmith/pip,atdaemon/pip,zenlambda/pip,nthall/pip,qbdsoft/pip,zvezdan/pip,msabramo/pip,haridsv/pip,yati-sagade/pip,nthall/pip,mindw/pip,Gabriel439/pip,h4ck3rm1k3/pip,habnabit/pip,jasonkying/pip,Gabriel439/pip,h4ck3rm1k3/pip,zvezdan/pip,benesch/pip,wkeyword/pip,pjdelport/pip,KarelJakubec/pip,Gabriel439/pip,squidsoup/pip,RonnyPfannschmidt/pip,luzfcb/pip,blarghmatey/pip,jmagnusson/pip,RonnyPfannschmidt/pip,mindw/pip,prasaianooz/pip,atdaemon/pip,pradyunsg/pip,mujiansu/pip,rbtcollins/pip,pfmoore/pip,wkeyword/pip,willingc/pip,habnabit/pip,jamezpolley/pip,jythontools/pip,harrisonfeng/pip,jythontools/pip,blarghmatey/pip,davidovich/pip,zorosteven/pip,erikrose/pip,pjdelport/pip,dstufft/pip,mujiansu/pip,willingc/pip,xavfernandez/pip,ianw/pip,fiber-space/pip,haridsv/pip,zenlambda/pip,caosmo/pip,chaoallsome/pip,alex/pip,squidsoup/pip,jasonkying/pip,msabramo/pip,atdaemon/pip