Merge branch 'master' into barry/petscoptions-object
Begin renaming the PetscOptions objects for the future where PetscOptions will not be a singleton
remove fatol and frtol concept from Tao; they are redundant and confusing compared to other tolerances
add boolean guards to check if tao default options have been changed
Set the options prefix correctly on tao->ksp and tao->linesearch.
updated PETSc directory layout to match standard packaging strategiesinclude/petsc finclude,private,mpiunilib/petsc confbin/petsc*
simplify option object names
updated new XXXSetFromOptions_YYY() methods to take PetscOptionsObjectType
manual merge of conflict
Merge branch 'barry/fix-options-default'Conflicts: src/ksp/ksp/examples/tutorials/ex52.c
cleanup of use of PetscOptionsInt and friends including use of flag final argument
removed Tao use of antediluvian PETSC_C_BEGIN/END with PETSC_EXTERN for Tao implementation class constructors
tao: documentation update
add a tao solver page to man pages for each solver (could be filled in a bit more)
fix Tao unconventional naming of TAOLINESEARCH_XXX_CTX TAOLINESEARCH_MT etc
fix some VecGetArray() to VecGetArrayRead() and const in Tao source code
changed TaoTerminationReason TaoConvergedReasonchanged TaoLineSearchTerminationReason to TaoLineSearchConvergedReasonreason: consistency with the rest of PETSc
fixed more Tao print format statements
changed TaoSolver usage to Tao
added petsc to front of tao public includes
fixed quote marks for includes to <>
remove tao-private include directory, private goes into petsc-private
tao: remove trailing spaces from sources
tao: untabify sources
more format cleanup of tao
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