(unw_is_signal_frame): Return true for any cursor with a non-zero abi_marker.
(unw_is_signal_frame): Return true for any cursor with a non-zero abi_marker.

(Logical change 1.84)

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