BUG: _lib/messagestream: open log file in binary mode
BUG: _lib/messagestream: open log file in binary mode

Fixes a failure on Windows.

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