0.7:
New function mstat added.
Docs added (thanks to Dean Roehrich).
0.8:
Exports Dump and mstat.
Docs list more details.
Arrays print addresses of SV.
CV: STASH renamed to COMP_STASH. The package of GV is printed now.
Updated for newer overloading implementation (but will not report
packages with overloading).
0.81:
Implements and exports DeadCode().
Buglet in the definition of mstat for malloc-less perl corrected.