Signal 11 and the amd64 port

[Matthew Dillon]

    I think its safe to say that we're going to see a lot of issue
    crop up with regards to 64-bit support, and its going to be
    difficult to sort out which ones are due to issues in the kernel
    and which ones are due to issues in third party programs compiled
    via pkgsrc.

    We've only just begun trying to run larger pkgsrc apps on 64-bit.
    The bulk build mechanics work very well and the build system doesn't
    crash even under extreme bulk-building loads, so we have definitely
    cleared a number of major hurtles.

						-Matt