Fix header inclusion order in `src/elfxx.c'
Fix header inclusion order in `src/elfxx.c'

Make sure that we have included `config.h' before checking HAVE_LZMA.
This makes a difference at least on MIPS, where we include `elfxx.c'
directly. For other platforms this does not make much difference, as we
are already indirectly including `config.h' from other headers.

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