(_UI_siglongjmp_cont): Provide dummy implementation. (_UI_longjmp_cont): Likewise.
(_UI_siglongjmp_cont): Provide dummy implementation.
(_UI_longjmp_cont): Likewise.

(Logical change 1.290)

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