Update berkelium to build on Ubuntu 12.04 and Debian Testing (wheezy).
Update berkelium to build on Ubuntu 12.04 and Debian Testing (wheezy).

This is a fixed version of ac3830bb8829d9b57a34a2c6ac212050735d6b35,
which was reverted by c86d623cc278bd50fdf066385b20be7a98a57d09. The
new version selectively applies the volatile malloc patch and always
disables warnings-as-errors on Linux.

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