add -K flag to check stack underflow
add -K flag to check stack underflow

R=ken
DELTA=38  (36 added, 0 deleted, 2 changed)
OCL=15482
CL=15491

rflanagan/reginaldflanagan-project1,mhennings/marcohennings-go,Triskite/willstone-goclone,webfd/go-zh,scirelli/scirelli-go,mhennings/marcohennings-go,rdp/rogerpack2005-golang,d0f/go-zh,d0f/go-zh,Triskite/willstone-goclone,webfd/go-zh,scirelli/scirelli-go,npe9/noahevans-go9,scirelli/scirelli-go,npe9/noahevans-go9,bryanxu/go-zh,sanjosh/sanjos100-tipc,sanjosh/sanjos100-tipc,sanjosh/sanjos100-tipc,bryanxu/go-zh,glycerine/jeaten-go-arrayof-structof,sanjosh/sanjos100-tipc,rflanagan/reginaldflanagan-project1,bryanxu/go-zh,npe9/noahevans-go9,bryanxu/go-zh,rflanagan/reginaldflanagan-project1,scirelli/scirelli-go,Triskite/willstone-goclone,mhennings/marcohennings-go,glycerine/jeaten-go-arrayof-structof,d0f/go-zh,Triskite/willstone-goclone,webfd/go-zh,mhennings/marcohennings-go,npe9/noahevans-go9,rdp/rogerpack2005-golang,mhennings/marcohennings-go,d0f/go-zh,rdp/rogerpack2005-golang,d0f/go-zh,scirelli/scirelli-go,mhennings/marcohennings-go,rflanagan/reginaldflanagan-project1,rflanagan/reginaldflanagan-project1,npe9/noahevans-go9,glycerine/jeaten-go-arrayof-structof,Triskite/willstone-goclone,rflanagan/reginaldflanagan-project1,Triskite/willstone-goclone,rdp/rogerpack2005-golang,rdp/rogerpack2005-golang,webfd/go-zh,rdp/rogerpack2005-golang,Triskite/willstone-goclone,scirelli/scirelli-go,npe9/noahevans-go9,bryanxu/go-zh,sanjosh/sanjos100-tipc,webfd/go-zh,webfd/go-zh,rflanagan/reginaldflanagan-project1,rflanagan/reginaldflanagan-project1,webfd/go-zh,d0f/go-zh,bryanxu/go-zh,webfd/go-zh,glycerine/jeaten-go-arrayof-structof,d0f/go-zh,bryanxu/go-zh,npe9/noahevans-go9,Triskite/willstone-goclone,scirelli/scirelli-go,mhennings/marcohennings-go,glycerine/jeaten-go-arrayof-structof,glycerine/jeaten-go-arrayof-structof,d0f/go-zh,npe9/noahevans-go9,rdp/rogerpack2005-golang,glycerine/jeaten-go-arrayof-structof,sanjosh/sanjos100-tipc,sanjosh/sanjos100-tipc,glycerine/jeaten-go-arrayof-structof,bryanxu/go-zh,scirelli/scirelli-go,mhennings/marcohennings-go,rdp/rogerpack2005-golang,sanjosh/sanjos100-tipc