redo node analysis to rewrite function return values as well
redo node analysis to rewrite function return values as well

Ignore-this: 67690217ba7b723ce0a8be60bbb09304

darcs-hash:974526460f6d3d6ce6eded5f21e826a0b716f576

dpwright/jhc,dpwright/jhc,dpwright/jhc,dpwright/jhc