Consolidate macros and share more code between different platforms.
Consolidate macros and share more code between different platforms.

(Logical change 1.162)

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