Summary:
Add an option for realloc and fiddle with the other options' help for
consistency.
Moved the memory leak test to memory_leak.c and added more.
Moved the place where we take the options into account closer to their
corresponding models to defend a bit against modifying one without
modifying the other.
Reviewed By: da319
Differential Revision: D28543340
fbshipit-source-id: 75894d06d