Telescope: Bug fix
* Fixed doc typo
* Fixed memory leak occurring on successive calls to PCSetUp.

Telescope: Resolve build failures

Telescope: Man page update
* This will render in a more readable html page

Telescope: man page updates

Telescope DMDA support: Bug fix
* Calls are supposed to set near null spaces

PCTelescope: Added support to define setup via the communicator associated with a coarse DM
* The implementation is general and works with any DM type
* The coarse DM must reside on a sub-communicato

PCTelescope: Added support to define setup via the communicator associated with a coarse DM
* The implementation is general and works with any DM type
* The coarse DM must reside on a sub-communicator of the parent (fine) DM. This is checked during setup.
* Support for using coarse DMs requires the user compose methods for the field scatter between two topologically identical DMs defined on different communicators.
* Currently only works with KSPSetComputeOperators, although it is straightforward to add the extra hooks to support assembled operators

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Telescope refactor: Preparing for support of user supplied MPI_Comm
* Store the sub-communicator
* Generalised the isActiveRank() method
* Updated calling of isActiveRank()

Improve the error propagation between and within KSPs and PCs

- Added KSPCheckSolve() to be called consistently by PCs to set failures if the inner solvers fail.
- Added use of KSPCheckNorm() and KS

Improve the error propagation between and within KSPs and PCs

- Added KSPCheckSolve() to be called consistently by PCs to set failures if the inner solvers fail.
- Added use of KSPCheckNorm() and KSPCheckDot() to all the Krylov methods to propagate errors from PCs to the KSPs.

Commit-type: feature

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Changed VecScatterCreate() to take a communicator and return scatter as other first class PETSc objects do.
Changed old VecScatterCreate() to VecScatterCreateWithData()

Completed basic refactorizati

Changed VecScatterCreate() to take a communicator and return scatter as other first class PETSc objects do.
Changed old VecScatterCreate() to VecScatterCreateWithData()

Completed basic refactorization of VecScatter code, ready for new implementations to be added.

(There is still some code duplication between the VecScatter MPI1 and MPI3 code but it can be fixed at anytime without requiring changes to the VecScatter API.

Part 5 of a refactorization of VecScatter to be treated as a first class PETSc object

Commit-type: style-fix

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PetscInfo: Add missing errorchecking