Check for recursiveness, do the stack store optimization on fixup() and  add some comments about what it does
Check for recursiveness, do the stack store optimization on fixup() and 
add some comments about what it does


SimonKagstrom/cibyl,SimonKagstrom/cibyl,SimonKagstrom/cibyl,SimonKagstrom/cibyl,SimonKagstrom/cibyl