Add runtime args for lazy nodes

Hello @majelbstoat, @andrew3886, 

Please review the following commits I made in branch 'nick-args'.

567665441158df6abc36a45936224592b96bcb92 (2013-09-19 13:11:46 -0400)
Add runtime args for lazy nodes

Check list:


R=@majelbstoat
R=@andrew3886