ARM: prefer to unwind using DWARF info
ARM: prefer to unwind using DWARF info

In case the user doesn't specify whether to unwind using the ARM specific
unwind tabler or DWARF info libunwind should prefer the latter. Since DWARF
expressions are more powerful than the ARM specific unwind tables
arm_find_proc_info is changed to check for DWARF first.

Signed-off-by: Ken Werner <ae36958ca69fd249ce813d415cd5831a3fb45335@linaro.org>

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