Bug 496923 - Allow update-test262.sh to copy directly from a test262 working directory, when (even local) cloning would be too slow.  r=terrence

--HG--
extra : rebase_source : be0f8b238ad16e990d44167739e9b8793baca6de
Bug 496923 - Make the test262-importing script import tests from ch10/, and skip the tests that we don't currently pass (6 for test harness shortcomings, 2 for actual bugs).  r=terrence

--HG--
extra : rebase_source : 92c4b241bb0ad55f5de7077cca5c4cf75fbecfe1
Bug 496923 - Import all the ch10/ tests from test262 into jstests.  r=importing-script-was-reviewed

--HG--
extra : rebase_source : dea30b698346549b29d01a8506cc05fde981569e
Bug 496923 - Remove js/src/tests/update-test402.sh as update-test262.sh subsumes it.  r=trivial

--HG--
extra : rebase_source : 18d64c90097ab0776657e67cc146cc7f25fedb8c