CI: Add stdlib to LD_LIBRARY_PATH (#14831)
CI: Add stdlib to LD_LIBRARY_PATH (#14831)

* CI: Add stdlib to LD_LIBRARY_PATH

* CI: Add to LIBRARY_PATH instead

* CI: Add it closer to SciPy build

[azure skip] [circle skip]

* CI: Dummy commit to test it from the top
rgommers/scipy,Stefan-Endres/scipy,endolith/scipy,Stefan-Endres/scipy,rgommers/scipy,perimosocordiae/scipy,ilayn/scipy,scipy/scipy,WarrenWeckesser/scipy,vigna/scipy,mdhaber/scipy,endolith/scipy,anntzer/scipy,mdhaber/scipy,WarrenWeckesser/scipy,WarrenWeckesser/scipy,andyfaff/scipy,Stefan-Endres/scipy,ilayn/scipy,scipy/scipy,tylerjereddy/scipy,vigna/scipy,grlee77/scipy,zerothi/scipy,andyfaff/scipy,zerothi/scipy,andyfaff/scipy,endolith/scipy,vigna/scipy,perimosocordiae/scipy,andyfaff/scipy,matthew-brett/scipy,andyfaff/scipy,matthew-brett/scipy,zerothi/scipy,scipy/scipy,ilayn/scipy,tylerjereddy/scipy,perimosocordiae/scipy,zerothi/scipy,tylerjereddy/scipy,WarrenWeckesser/scipy,ilayn/scipy,WarrenWeckesser/scipy,zerothi/scipy,tylerjereddy/scipy,vigna/scipy,anntzer/scipy,scipy/scipy,grlee77/scipy,scipy/scipy,Stefan-Endres/scipy,scipy/scipy,WarrenWeckesser/scipy,perimosocordiae/scipy,perimosocordiae/scipy,mdhaber/scipy,anntzer/scipy,mdhaber/scipy,matthew-brett/scipy,Stefan-Endres/scipy,ilayn/scipy,grlee77/scipy,perimosocordiae/scipy,tylerjereddy/scipy,grlee77/scipy,rgommers/scipy,zerothi/scipy,endolith/scipy,grlee77/scipy,rgommers/scipy,ilayn/scipy,anntzer/scipy,vigna/scipy,Stefan-Endres/scipy,mdhaber/scipy,matthew-brett/scipy,anntzer/scipy,endolith/scipy,mdhaber/scipy,matthew-brett/scipy,andyfaff/scipy,endolith/scipy,rgommers/scipy,anntzer/scipy