Squashed commit of the following:

commit 9309343f9a5d9f242755dd5217d9c44ab921351d
Author: Samuel K. Gutierrez <samuel@lanl.gov>
Date:   Mon Nov 4 17:18:23 2013 -0700

    Fix j7 in MallocPlus crashes.

    This one was tricky. Don't really want to go into it. Basically it boils down to
    different views of MallocPlus' structure. Thanks for your help @hjelmn.

commit 4013fa99af6d88035a299b866695ae01147f72c1
Author: Samuel K. Gutierrez <samuel@lanl.gov>
Date:   Mon Nov 4 15:02:46 2013 -0700

    Silence valgrind warnings in l7.