TST: core: use aligned memory for dot() out= arrays
TST: core: use aligned memory for dot() out= arrays

On SPARC, longdouble alignment is bigger than that provided by default
allocation. So use a custom allocation method in the test using
dot(out=).

mattip/numpy,jakirkham/numpy,pizzathief/numpy,rgommers/numpy,endolith/numpy,seberg/numpy,pbrod/numpy,WarrenWeckesser/numpy,WarrenWeckesser/numpy,endolith/numpy,ahaldane/numpy,anntzer/numpy,Eric89GXL/numpy,solarjoe/numpy,ahaldane/numpy,abalkin/numpy,pbrod/numpy,behzadnouri/numpy,mattip/numpy,rgommers/numpy,charris/numpy,jorisvandenbossche/numpy,mhvk/numpy,gfyoung/numpy,numpy/numpy,chatcannon/numpy,seberg/numpy,WarrenWeckesser/numpy,bringingheavendown/numpy,pdebuyl/numpy,ahaldane/numpy,grlee77/numpy,jorisvandenbossche/numpy,chatcannon/numpy,behzadnouri/numpy,jakirkham/numpy,MSeifert04/numpy,grlee77/numpy,jorisvandenbossche/numpy,seberg/numpy,WarrenWeckesser/numpy,bringingheavendown/numpy,anntzer/numpy,jakirkham/numpy,jorisvandenbossche/numpy,jakirkham/numpy,grlee77/numpy,charris/numpy,abalkin/numpy,mhvk/numpy,pbrod/numpy,madphysicist/numpy,shoyer/numpy,endolith/numpy,bertrand-l/numpy,pdebuyl/numpy,jorisvandenbossche/numpy,numpy/numpy,shoyer/numpy,anntzer/numpy,simongibbons/numpy,b-carter/numpy,MSeifert04/numpy,pdebuyl/numpy,pbrod/numpy,bertrand-l/numpy,numpy/numpy,shoyer/numpy,numpy/numpy,rgommers/numpy,ahaldane/numpy,ssanderson/numpy,solarjoe/numpy,simongibbons/numpy,pdebuyl/numpy,mhvk/numpy,solarjoe/numpy,madphysicist/numpy,grlee77/numpy,charris/numpy,ahaldane/numpy,tynn/numpy,simongibbons/numpy,ssanderson/numpy,grlee77/numpy,pizzathief/numpy,seberg/numpy,b-carter/numpy,Eric89GXL/numpy,MSeifert04/numpy,mattip/numpy,mattip/numpy,shoyer/numpy,simongibbons/numpy,WarrenWeckesser/numpy,bringingheavendown/numpy,madphysicist/numpy,MSeifert04/numpy,ssanderson/numpy,mhvk/numpy,Eric89GXL/numpy,rgommers/numpy,pbrod/numpy,pizzathief/numpy,madphysicist/numpy,tynn/numpy,madphysicist/numpy,gfyoung/numpy,charris/numpy,mhvk/numpy,pizzathief/numpy,gfyoung/numpy,MSeifert04/numpy,chatcannon/numpy,shoyer/numpy,behzadnouri/numpy,endolith/numpy,jakirkham/numpy,bertrand-l/numpy,tynn/numpy,anntzer/numpy,Eric89GXL/numpy,abalkin/numpy,pizzathief/numpy,b-carter/numpy,simongibbons/numpy