(compile_reg): Use IA64_INSN_MOVE_SCRATCH instead of 	IA64_INSN_MOVE_SIGCONTEXT. (run_script): Drop IA64_INSN_MOVE_SIGCONTEXT.  Implement 	IA64_INSN_MOVE_SCRATCH by calling ia64_scratch_loc().
(compile_reg): Use IA64_INSN_MOVE_SCRATCH instead of
	IA64_INSN_MOVE_SIGCONTEXT.
(run_script): Drop IA64_INSN_MOVE_SIGCONTEXT.  Implement
	IA64_INSN_MOVE_SCRATCH by calling ia64_scratch_loc().

(Logical change 1.5)

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