Update NEWS file for v0.98.1.
Update NEWS file for v0.98.1.

(Logical change 1.274)

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