curvature check updated

removed diagonal Broyden matrix and buried it into SymBrdn as a scaling option

Added diagonal Broyden scaling and preconditioning to BQNK algorithms

LMVM matrices can now define J0 with another LMVM matrix, and DiagBrdn scaling implemented for relevant TAO algorithms

New LMVM matrix added for a symmetric Broyden approx of Hessian diagonals

Name refactoring for LMVM matrices

BNK algorithms fixed up for the new LMVM matrix

derived LMVM types added and moved into the KSP package

PetscInfo call in LS failure removed

Merge conflicts resolved after rebase

Convergence check separated from TaoMonitor. Changed propagated to unconstrained algorithms. Untested.

missing CHKERRQ

bug fixes for linux-matlab-ilp64 and cuda-single

Error resolved in TaoDestroy_LMVM and outputs updated

One more CHKERRQ, plus authorship fix on manual

PETSC_EXTERN and CHKERRQ fixes

Documentation update for new recycle option flag

Output files replaced/added for the recycling changes

Added view information for tracking total iterations across multiple TaoSolve() calls

BFGS statistics preserved across multiple TaoSolve() calls

Added simple test for recycling behavior

Setting implemented and it's sticking, but untested

untested addition of new recycling option to LMVM

Wrapping up for a pull request