setjmp asm for zero-based sandbox model
setjmp asm for zero-based sandbox model


BUG=None
TEST=run_setlongjmp_test run_longjmp_test spec2k/gap (with custom zero-based sel_ldr and nacl_bootstrap)

Review URL: https://chromiumcodereview.appspot.com/10795069

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@9245 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client