(struct dwarf_cursor): Add new member "cfa_is_sp" to mark the case 	when the (unsaved) stack-pointer is the CFA.
(struct dwarf_cursor): Add new member "cfa_is_sp" to mark the case
	when the (unsaved) stack-pointer is the CFA.

(Logical change 1.253)

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