Up version number to 0.2-pre5. (OS_LINUX): New conditional. (CFLAGS): Turn on -Wsign-compare for gcc.
Up version number to 0.2-pre5.
(OS_LINUX): New conditional.
(CFLAGS): Turn on -Wsign-compare for gcc.

(Logical change 1.45)

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