Added support for change of basis approach in BDDC code.

Now the default behaviour change basis on the edges and use explicit constraints on the faces.

Hg-commit: 289a366e7a29b064b91cd56aea6e4c7c20

Added support for change of basis approach in BDDC code.

Now the default behaviour change basis on the edges and use explicit constraints on the faces.

Hg-commit: 289a366e7a29b064b91cd56aea6e4c7c20085212

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merge from 3.3

Hg-commit: 05fe901e148df7bed1f2fd85efacfcb89ab9dbaf

Use KSPIncrementTabLevel() to set tabbing on the PC as well.

Hg-commit: 39dae4a883c70c8621ff35a63f76df22c2f556f3

Solved a bug in MPI call during interface adapting.

Hg-commit: 031ab07585a277b9a8266349bf66edc22d3b9e84

sort is in DMDAGetFaceInterpolation() because MatGetSubMatrices() requires sorted is.

Hg-commit: a0d599cb3e178c1b2bccced8fe25dc4a00db363d

Partition of unity application moved outside the call to PCBDDCApplyInterfacePreconditioner.
Changed the prototype of the function accordingly.

Hg-commit: d938b8ee259cdc3f6e10e9e62eac372caeb4e5c7

small fix with symetrizing too much.

Hg-commit: 5d7fed4434ee8680c25d2e078dad30f945e04d4d

-pc_type svd can be used directly on parallel systems (without redundant) and PCApplyTranspose_SVD implemented

Hg-commit: 70a58d3000677756c9aed2262540928741a9f64a

Remove debugging statement from PCSetData_AGG

Hg-commit: 74c7916cac73a09ab5dc85d24cf2273407d56d32

Add -pc_gamg_eigtarget (name subject to change), default [0.05,1.05] preserved

Hg-commit: ff5c830971dae39a7e60b73d9307caa449199647

Add const to many enum string lists

Hg-commit: c83e9a8fda58664955a3d65190eafbaf3a08ee6d

backout all chmod stuff in bf971ba58125
[but keep diffs to src/mat/impls/aij/mpi/mpimatmatmult.c ]

Hg-commit: 4a812fc1f35496ce2717c7da9ef12ffabbd13258

fixing some eigen estimate stuff.

Hg-commit: 8b9a1f45f346723043f83e7f16dde7b17b6762a3

fixed small bug.

Hg-commit: 56ba80444c7aca3a64d047de02fc608e8d5cdd35

removed a spurious call to MatSetBlockSize.

Hg-commit: bf971ba58125bd8cf7ceb2a9d0f5cdf27c27cc6a