add Sort methods for convenience types
add Sort methods for convenience types

R=gri
DELTA=9  (9 added, 0 deleted, 0 changed)
OCL=34000
CL=34003

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