Include <asm/ptrace_offsets.h> if host is IA-64. (trace_mode): New variable. (main): Support options -i (instruction-by-instruction backtracing), -s 	(syscall-level backtracing), -t (triggered instruction-level backtracing).
Include <asm/ptrace_offsets.h> if host is IA-64.
(trace_mode): New variable.
(main): Support options -i (instruction-by-instruction backtracing), -s
	(syscall-level backtracing), -t (triggered instruction-level backtracing).

(Logical change 1.55)

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