Add some missing 'volatile' qualifiers for accessing untrusted address space
Add some missing 'volatile' qualifiers for accessing untrusted address space

BUG=http://code.google.com/p/nativeclient/issues/detail?id=1388
TEST=not testable: this is just in case the compiler optimises the access in
  an unexpected way

Review URL: https://chromiumcodereview.appspot.com/9210004

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@7609 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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