malloc bug fixes.

use malloc by default.
free stacks.

R=r
DELTA=424  (333 added, 29 deleted, 62 changed)
OCL=21553
CL=21584
12 files changed
tree: 9b40150f73466d543e7724ee596fb3c4ef094e72
  1. doc/
  2. include/
  3. lib/
  4. pkg/
  5. src/
  6. test/
  7. usr/