PCTelescopeRichardson:
* Removed set but unused variable

PCBDDC: small fixes

Print graph used to compute connected components when needed
solved memory leak

PCTelescope:
* Added PCApplyRichardson

Telescope:
* Removed support for non-zero initial guess

Removed PCSetInitialGuessNonzero() and PCGetInitialGuessNonzero();
they make no sense since PCApply() is a operator and cannot depend on the initial guess.
The routines were not used anyway. Also upd

Removed PCSetInitialGuessNonzero() and PCGetInitialGuessNonzero();
they make no sense since PCApply() is a operator and cannot depend on the initial guess.
The routines were not used anyway. Also updated the manual page for PCKSP developers not
to clarify why there is not support for "passing the initial guess" into the inner KSP

Thanks-to: Dave May <dave.mayhem23@gmail.com>

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Fix serious bug introduced with introduction of XXXMonitorSetFromOptions() that resulting in
excessive pushes to viewer formats and caused different viewers to overwrite each others formats

Time: .7

Fix serious bug introduced with introduction of XXXMonitorSetFromOptions() that resulting in
excessive pushes to viewer formats and caused different viewers to overwrite each others formats

Time: .7 hours
Reported-by: Lawrence Mitchell <lawrence.mitchell@imperial.ac.uk>

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PCTelescope: Removed unused variable

PCTelescopeDMDA permutation matrix:
* Corrected pre-allocation of the permutation matrix (twice as many non-zeros were requested than needed)

PCTelescopeMatCreate_dmda:
* Removed comment code, leave comment regarding lazy assembly

PCBDDC: improve PCView_BDDC

Added control for the explicit change of variables for pressure dofs

PCTelescope: Removed unused block size variable

PCBDDC: bugfix for benign_n > 1

the values were inserted in cs_AIB in column major format
the fix consists in changing the shape of cs_AIB

PCTelescope:
* Removed spaces from blank lines

PCBDDC: add runtime options to control dirichlet dofs elimination in presolve

Most the time removing dir dofs does not have an impact on the global convergence

PCTelescope manpage:
* Updated doc for PCTelescopeSetIgnoreKSPComputeOperators

PCTelescope - New API
* Added API for Get/Set flags indicating whether KSPSetComputeOperators should be used or ignored.

PCTelescope: * Use flag to ignore kspcompute operators when defining sub-KSP

PCTelescope: * Copy method and context to remove nullspace from parent

PCTelescope: * Changed prefix on sub-DM, now it inherits the name from the sub-KSP * Added flag to optionally ignore KSPComputeOperators

PCTelescope: * Added support for non-zero initial guesses

PCTelescope: * Copy matrix creation and domaindecomp routines from parent DM to sub DM

PCTelescope: * Lazy assembly is normal when KSPSetComputeOperators is used

PCTelescope: * Added support for the case when KSPComputeOperators has been set

PCBDDC: remove usage of sf_nroots and sf_nleaves members of Mat_IS data structure

fixed a memory leak

Fix visibility issues in CUSP and VECCUDA