)]}'
{
  "commit": "a9d8ef847f643f9b7cf1270027d7c8744b5db585",
  "tree": "caac91b1eb070c2b1abe4c68a843c809b96f87c1",
  "parents": [
    "921e8abbcd122efad5bbbd15605cc6b086805c53"
  ],
  "author": {
    "name": "Sameer Agarwal",
    "email": "sameeragarwal@google.com",
    "time": "Mon May 14 02:28:05 2012 -0700"
  },
  "committer": {
    "name": "Sameer Agarwal",
    "email": "sameeragarwal@google.com",
    "time": "Mon May 14 02:28:05 2012 -0700"
  },
  "message": "1. Remove constant_sparsity from LinearSolver::Options. It introduces\nunnecessarily complexity in the structure of linear solvers and preconditioners.\nThis is the first step towards cleaning up the Preconditioner interface.\n\n2. Minor tweaks and cleanups to the various linear solvers.\n",
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