BUG: scipy.stats._unuran: send only strings to include_dirs (#14633)
BUG: scipy.stats._unuran: send only strings to include_dirs (#14633)

With python3.7, sending Path variables gives an error
andyfaff/scipy,rgommers/scipy,endolith/scipy,WarrenWeckesser/scipy,grlee77/scipy,andyfaff/scipy,ilayn/scipy,Stefan-Endres/scipy,mdhaber/scipy,scipy/scipy,endolith/scipy,tylerjereddy/scipy,andyfaff/scipy,anntzer/scipy,perimosocordiae/scipy,ilayn/scipy,anntzer/scipy,ilayn/scipy,endolith/scipy,endolith/scipy,perimosocordiae/scipy,vigna/scipy,vigna/scipy,WarrenWeckesser/scipy,mdhaber/scipy,WarrenWeckesser/scipy,perimosocordiae/scipy,WarrenWeckesser/scipy,grlee77/scipy,ilayn/scipy,Stefan-Endres/scipy,WarrenWeckesser/scipy,rgommers/scipy,tylerjereddy/scipy,matthew-brett/scipy,ilayn/scipy,rgommers/scipy,tylerjereddy/scipy,endolith/scipy,anntzer/scipy,ilayn/scipy,zerothi/scipy,grlee77/scipy,rgommers/scipy,mdhaber/scipy,mdhaber/scipy,mdhaber/scipy,vigna/scipy,Stefan-Endres/scipy,perimosocordiae/scipy,rgommers/scipy,anntzer/scipy,zerothi/scipy,anntzer/scipy,Stefan-Endres/scipy,grlee77/scipy,Stefan-Endres/scipy,Stefan-Endres/scipy,zerothi/scipy,scipy/scipy,perimosocordiae/scipy,scipy/scipy,tylerjereddy/scipy,endolith/scipy,scipy/scipy,zerothi/scipy,scipy/scipy,matthew-brett/scipy,andyfaff/scipy,andyfaff/scipy,zerothi/scipy,vigna/scipy,scipy/scipy,andyfaff/scipy,matthew-brett/scipy,mdhaber/scipy,perimosocordiae/scipy,matthew-brett/scipy,vigna/scipy,zerothi/scipy,anntzer/scipy,WarrenWeckesser/scipy,matthew-brett/scipy,tylerjereddy/scipy,grlee77/scipy