MATLAB Serialization does not work on osx

[Andrew Melim]

@indelman reported that he was unable to compile the toolbox on osx if the toolbox serialization was enabled

[Chris Beall]

This issue came up last October, and the work-around was to disable serialization in Matlab on OS X: disable serialize() in gtsam.h to avoid bus error 10 in clang LLVM's ld version >=3.1

Relevant commits: b67e17e 876edb4

[Chris Beall]

I just verified that it does compile with serialization turned on, but ends up crashing. There's already an issue for that, so I'll mark this as duplicate.

[Chris Beall]

Duplicate of #16.