STC Code generation for coasters call with additional args.

TODO on STC: multiple worker types.

git-svn-id: https://svn.mcs.anl.gov/repos/exm/sfw/stc/trunk@13390 dc4e9af1-7f46-4ead-bba6-71afc04862de
Fix test

git-svn-id: https://svn.mcs.anl.gov/repos/exm/sfw/stc/trunk@13391 dc4e9af1-7f46-4ead-bba6-71afc04862de