Add PPC namespace checking
Add PPC namespace checking

PPC is the only architecture that has the get_func_addr() symbol
exported, so add specific checks for this architecture.

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