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

memory allocation error

Reported-by: Dave May <dave.mayhem23@gmail.com>

error in computing needed space for allocation

Reported-by: Dave May <dave.mayhem23@gmail.com>

Begin renaming the PetscOptions objects for the future where PetscOptions will not be a singleton

moved PCTELESCOPE comment into users manual since no one will see the comment

remove use of some unitialized variables, remove use of "dummy" entries in Vec and IS since Dave May thought they could
not be of size zero. Now three telescope tests give no valgrind errors

code sent unitialized data via MPI
and allocated too large space for creating indices

fix strange PCTelescope struct name of P which caused duplicate symbol error on some systems
cleanup use of PetscMalloc and PetscFree for telescope for modern PETSc standards
replace semiredundat to

fix strange PCTelescope struct name of P which caused duplicate symbol error on some systems
cleanup use of PetscMalloc and PetscFree for telescope for modern PETSc standards
replace semiredundat to telescope in makefile that runs test examples

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fix warnings on bsd. Also fix usage of PetscFunctionBegin/Return

/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c: In function 'PCTelescopeGetKSP':
/home/balay/petsc.test/src/ksp/pc/imp

fix warnings on bsd. Also fix usage of PetscFunctionBegin/Return

/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c: In function 'PCTelescopeGetKSP':
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c:654: warning: statement with no effect
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c: In function 'PCTelescopeGetReductionFactor':
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c:675: warning: statement with no effect
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c: In function 'PCTelescopeSetReductionFactor':
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c:696: warning: statement with no effect
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c: In function 'PCTelescopeGetIgnoreDM':
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c:717: warning: statement with no effect
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c: In function 'PCTelescopeSetIgnoreDM':
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c:738: warning: statement with no effect
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c: In function 'PCTelescopeGetDM':
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c:759: warning: statement with no effect
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c: In function 'PCSetUp_Telescope':
/home/balay/petsc.test/src/ksp/pc/impls/telescope/telescope.c:352: warning: 'subcomm' may be used uninitialized in this function

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Making an even bigger mess, I cannot explain why this is not in the branch

Merge branch 'pr352/dmay/pctelescope/master' of bitbucket.org:petsc/petsc into pr352/dmay/pctelescope/master

fixes for non-portable code, unused variables, uninitialized variables etc

c89: compile fixes

renamed semiredundant files to telescope