MIPS: fix symbol naming for `mips_lock', `mips_local_resume', and `mips_local_addr_space_init'
MIPS: fix symbol naming for `mips_lock', `mips_local_resume', and `mips_local_addr_space_init'

Properly export the symbol names also on MIPS. `make check' was
complaining:

src/.libs/libunwind.a(Linit.o): In function `mips_local_addr_space_init':
src/mips/Ginit.c:183: multiple definition of `mips_local_addr_space_init'
../src/.libs/libunwind-mips.a(Ginit.o):src/mips/Ginit.c:183: first defined here

src/.libs/libunwind.a(Lglobal.o): In function `_ULmips_init':
src/mips/Gglobal.c:42: multiple definition of `mips_lock'
../src/.libs/libunwind-mips.a(Gglobal.o):src/mips/Gglobal.c:42: first defined here

collect2: ld returned 1 exit status

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