No longer build the preconditioner for the pressure mass matrix in the (1,1) block of the system matrix but in the preconditioner_matrix proper. That also means that we can't throw away the preconditioner_matrix at the end of building the preconditioner any more, though.
No longer build the preconditioner for the pressure mass matrix in the (1,1) block of the system matrix but in the preconditioner_matrix proper. That also means that we can't throw away the preconditioner_matrix at the end of building the preconditioner any more, though.

git-svn-id: 31d9d2f6432a47c86a3640814024c107794ea77c@16529 0785d39b-7218-0410-832d-ea1e28bc413d

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