Fix typo of 7-point gauss rule (#14808)
Fix typo of 7-point gauss rule (#14808)

QUADPACK: dqk15w.f: line #103, wrong weights of the 7-point gauss rule
The weights of wg should be the same as "dqk15.f":
#103: "0.3818300505051889d+00", should be changed to "0.3818300505051189d+00".
This is a historical typo that commonly exists in every code that embeds netlib-quadpack, which does not necessarily produce an actual numerical error in the calculation of the error of the quadrature using the Gauss-Kronrod rule.

Reviewed/discussed in https://github.com/scipy/scipy/issues/14807.

An upstream fix at netlib/quadpack made on 05 Oct 2021, see https://github.com/scipy/scipy/issues/14807#issuecomment-935081072
mdhaber/scipy,grlee77/scipy,andyfaff/scipy,tylerjereddy/scipy,perimosocordiae/scipy,andyfaff/scipy,mdhaber/scipy,zerothi/scipy,tylerjereddy/scipy,vigna/scipy,Stefan-Endres/scipy,endolith/scipy,rgommers/scipy,zerothi/scipy,mdhaber/scipy,scipy/scipy,ilayn/scipy,zerothi/scipy,andyfaff/scipy,WarrenWeckesser/scipy,anntzer/scipy,anntzer/scipy,ilayn/scipy,endolith/scipy,perimosocordiae/scipy,tylerjereddy/scipy,Stefan-Endres/scipy,scipy/scipy,WarrenWeckesser/scipy,andyfaff/scipy,andyfaff/scipy,tylerjereddy/scipy,ilayn/scipy,Stefan-Endres/scipy,perimosocordiae/scipy,rgommers/scipy,matthew-brett/scipy,anntzer/scipy,endolith/scipy,perimosocordiae/scipy,andyfaff/scipy,zerothi/scipy,grlee77/scipy,vigna/scipy,zerothi/scipy,endolith/scipy,grlee77/scipy,anntzer/scipy,WarrenWeckesser/scipy,mdhaber/scipy,vigna/scipy,Stefan-Endres/scipy,matthew-brett/scipy,vigna/scipy,scipy/scipy,matthew-brett/scipy,rgommers/scipy,rgommers/scipy,scipy/scipy,perimosocordiae/scipy,scipy/scipy,matthew-brett/scipy,WarrenWeckesser/scipy,ilayn/scipy,anntzer/scipy,vigna/scipy,grlee77/scipy,ilayn/scipy,tylerjereddy/scipy,WarrenWeckesser/scipy,WarrenWeckesser/scipy,Stefan-Endres/scipy,grlee77/scipy,scipy/scipy,Stefan-Endres/scipy,mdhaber/scipy,mdhaber/scipy,matthew-brett/scipy,perimosocordiae/scipy,endolith/scipy,endolith/scipy,anntzer/scipy,ilayn/scipy,rgommers/scipy,zerothi/scipy