Make alignment 0mod8 to work around glibc issue
Make alignment 0mod8 to work around glibc issue

BUG= http://code.google.com/p/nativeclient/issues/detail?id=2665
TEST=nacl_glibc.run_call_structs_test
nacl_glibc.run_nameservice_test
nacl_glibc.run_pagesize_test
nacl_glibc.run_thread_test
nacl_glibc.run_float2_test
nacl_glibc.run_types_srpc_test_nexe
nacl_glibc.run_simple_srpc_test_nexe
nacl_glibc.run_pm_nameservice_chrome_browser_test
Review URL: https://chromiumcodereview.appspot.com/9705106

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@8042 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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