Add CHECK_ATOMIC_OPS test.
Add CHECK_ATOMIC_OPS test.

(Logical change 1.123)

vegard/libunwind,rntz/libunwind,libunwind/libunwind,bo-on-software/libunwind,cms-externals/libunwind,atanasyan/libunwind,unkadoug/libunwind,olibc/libunwind,tony/libunwind,maltek/platform_external_libunwind,ehsan/libunwind,DroidSim/platform_external_libunwind,project-zerus/libunwind,cloudius-systems/libunwind,geekboxzone/mmallow_external_libunwind,maltek/platform_external_libunwind,geekboxzone/mmallow_external_libunwind,cms-externals/libunwind,lat/libunwind,atanasyan/libunwind-android,evaautomation/libunwind,cloudius-systems/libunwind,krytarowski/libunwind,libunwind/libunwind,frida/libunwind,olibc/libunwind,zeldin/platform_external_libunwind,rantala/libunwind,SyndicateRogue/libunwind,tony/libunwind,vtjnash/libunwind,DroidSim/platform_external_libunwind,Keno/libunwind,zliu2014/libunwind-tilegx,atanasyan/libunwind-android,0xlab/0xdroid-external_libunwind,olibc/libunwind,zeldin/platform_external_libunwind,androidarmv6/android_external_libunwind,martyone/libunwind,jrmuizel/libunwind,Keno/libunwind,androidarmv6/android_external_libunwind,androidarmv6/android_external_libunwind,wdv4758h/libunwind,lat/libunwind,fdoray/libunwind,Chilledheart/libunwind,atanasyan/libunwind,geekboxzone/lollipop_external_libunwind,fillexen/libunwind,android-ia/platform_external_libunwind,CyanogenMod/android_external_libunwind,vegard/libunwind,martyone/libunwind,unkadoug/libunwind,joyent/libunwind,mpercy/libunwind,zliu2014/libunwind-tilegx,cms-externals/libunwind,tony/libunwind,djwatson/libunwind,dagar/libunwind,Chilledheart/libunwind,tkelman/libunwind,geekboxzone/lollipop_external_libunwind,DroidSim/platform_external_libunwind,libunwind/libunwind,yuyichao/libunwind,rantala/libunwind,bo-on-software/libunwind,ehsan/libunwind,rogwfu/libunwind,djwatson/libunwind,bo-on-software/libunwind,Keno/libunwind,evaautomation/libunwind,tronical/libunwind,project-zerus/libunwind,dreal-deps/libunwind,zliu2014/libunwind-tilegx,SyndicateRogue/libunwind,krytarowski/libunwind,yuyichao/libunwind,atanasyan/libunwind,wdv4758h/libunwind,adsharma/libunwind,joyent/libunwind,frida/libunwind,SyndicateRogue/libunwind,mpercy/libunwind,android-ia/platform_external_libunwind,project-zerus/libunwind,evaautomation/libunwind,dropbox/libunwind,fillexen/libunwind,CyanogenMod/android_external_libunwind,fdoray/libunwind,pathscale/libunwind,cloudius-systems/libunwind,zeldin/platform_external_libunwind,joyent/libunwind,tkelman/libunwind,geekboxzone/mmallow_external_libunwind,djwatson/libunwind,atanasyan/libunwind-android,martyone/libunwind,jrmuizel/libunwind,igprof/libunwind,lat/libunwind,jrmuizel/libunwind,dagar/libunwind,adsharma/libunwind,0xlab/0xdroid-external_libunwind,Chilledheart/libunwind,tronical/libunwind,ehsan/libunwind,pathscale/libunwind,CyanogenMod/android_external_libunwind,rogwfu/libunwind,android-ia/platform_external_libunwind,dropbox/libunwind,mpercy/libunwind,dreal-deps/libunwind,rntz/libunwind,dagar/libunwind,maltek/platform_external_libunwind,dreal-deps/libunwind,fillexen/libunwind,vtjnash/libunwind,0xlab/0xdroid-external_libunwind,rogwfu/libunwind,rantala/libunwind,wdv4758h/libunwind,frida/libunwind,igprof/libunwind,geekboxzone/lollipop_external_libunwind,tkelman/libunwind,pathscale/libunwind,fdoray/libunwind,krytarowski/libunwind,yuyichao/libunwind,vegard/libunwind,rntz/libunwind,igprof/libunwind,vtjnash/libunwind,adsharma/libunwind,unkadoug/libunwind,tronical/libunwind,dropbox/libunwind