SciRuby/nmatrix — pull request #278 by cjfuller (2014-09-30 03:29:19+00:00)
Title: Use address rather than value in several conservative registrations.

While doing some debugging for #277, I compiled with `NM_GC_CONSERVATIVE` defined, and found that the code no longer compiled! This was due to a number of places where I was unregistering a value instead of a pointer. I've fixed this by passing addresses instead, which allows nmatrix to compile with the conservative gc flag on.