convert walkexpr to take Node**; drop indir

R=ken
OCL=32421
CL=32421
7 files changed
tree: fe4375d60a51cc723107b0f79e8f3f1c0e297447
  1. doc/
  2. include/
  3. lib/
  4. misc/
  5. pkg/
  6. src/
  7. test/
  8. usr/