BLD: Do not use gcc warnings flags when 'gcc' is actually clang.
BLD: Do not use gcc warnings flags when 'gcc' is actually clang.

simongibbons/numpy,madphysicist/numpy,jorisvandenbossche/numpy,gfyoung/numpy,WarrenWeckesser/numpy,pdebuyl/numpy,numpy/numpy,rgommers/numpy,pizzathief/numpy,ahaldane/numpy,MSeifert04/numpy,ahaldane/numpy,WarrenWeckesser/numpy,numpy/numpy,endolith/numpy,numpy/numpy,rgommers/numpy,pbrod/numpy,jorisvandenbossche/numpy,mhvk/numpy,pizzathief/numpy,pizzathief/numpy,gfyoung/numpy,jakirkham/numpy,grlee77/numpy,pbrod/numpy,simongibbons/numpy,ahaldane/numpy,grlee77/numpy,jakirkham/numpy,pbrod/numpy,anntzer/numpy,shoyer/numpy,jorisvandenbossche/numpy,grlee77/numpy,pizzathief/numpy,simongibbons/numpy,pbrod/numpy,pbrod/numpy,MSeifert04/numpy,endolith/numpy,mhvk/numpy,jakirkham/numpy,rgommers/numpy,madphysicist/numpy,WarrenWeckesser/numpy,seberg/numpy,endolith/numpy,abalkin/numpy,WarrenWeckesser/numpy,madphysicist/numpy,anntzer/numpy,mhvk/numpy,anntzer/numpy,seberg/numpy,numpy/numpy,mattip/numpy,MSeifert04/numpy,jorisvandenbossche/numpy,mhvk/numpy,charris/numpy,mhvk/numpy,mattip/numpy,ahaldane/numpy,charris/numpy,shoyer/numpy,jorisvandenbossche/numpy,abalkin/numpy,abalkin/numpy,shoyer/numpy,mattip/numpy,shoyer/numpy,gfyoung/numpy,seberg/numpy,jakirkham/numpy,pdebuyl/numpy,pdebuyl/numpy,pizzathief/numpy,madphysicist/numpy,simongibbons/numpy,MSeifert04/numpy,anntzer/numpy,WarrenWeckesser/numpy,jakirkham/numpy,seberg/numpy,ahaldane/numpy,MSeifert04/numpy,grlee77/numpy,simongibbons/numpy,pdebuyl/numpy,charris/numpy,mattip/numpy,madphysicist/numpy,shoyer/numpy,rgommers/numpy,endolith/numpy,grlee77/numpy,charris/numpy