(siglongjmp): Use macros from jmpbuf.h instead of hardcoded values. 	For ia64, if the longjmp is crossing a signal-frame, install 	the new signal mask by updating the sc_mask member in the 	oldest signal-frame.
(siglongjmp): Use macros from jmpbuf.h instead of hardcoded values.
	For ia64, if the longjmp is crossing a signal-frame, install
	the new signal mask by updating the sc_mask member in the
	oldest signal-frame.

(Logical change 1.259)

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