[boost] Metrowerks 9.2 approaching 100% on Windows

The Win32 regression test results now reflect the new Metrowerks 9.2 release. See http://boost.sourceforge.net/regression-logs/ Fails have been reduced to just two: graph adj_list_cc: That's a regression compared to 8.3 and the 9.2 beta that we need to look into. I've emailed Jeremy. type traits is_abstract_test: This is a new test, so it was not tested during the 9.2 beta. I'd appreciate it if the type traits folks would take a look to see if this is a Boost or Metrowerks problem. Anyhow, congratulations to Metrowerks, particularly Howard Hinnant, Andreas Hommel, and Ed Swartz. They put in a lot of effort checking out Boost regression test failures. --Beman