NaCl runtime performance tests

These are links for graphs for NaCl runtime performance test results. This excludes Spec and PNaCl results:

nacl-xp-bare-newlib-opt	nacl-xp-bare-glibc-opt
nacl-win7-32-bare-newlib-opt	nacl-win7-32-bare-glibc-opt
nacl-win7-64-bare-newlib-opt	nacl-win7-64-bare-glibc-opt
nacl-mac10.6-newlib-opt	nacl-mac10.6-glibc-opt
nacl-mac10.7-newlib-opt	nacl-mac10.7-glibc-opt
nacl-lucid-32-bare-newlib-opt	nacl-lucid-32-bare-glibc-opt
nacl-lucid-64-bare-newlib-opt	nacl-lucid-64-bare-glibc-opt