Add missing __tracebackhide__ to testing functions.
Add missing __tracebackhide__ to testing functions.

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