removed Tao use of antediluvian PETSC_C_BEGIN/END with PETSC_EXTERN for Tao implementation class constructors

set the taolinesearch->reset to 0 when changing type

with with -> with the the -> the

TAO: Additional fixes for C++ complex scalars

TAO: Enable interface for complex scalar builds

fix viewer issues in tao and taolinesearch

tao: fix mt linesearch bug where success wasnt reported

fix Tao unconventional naming of TAOLINESEARCH_XXX_CTX TAOLINESEARCH_MT etc

fix some VecGetArray() to VecGetArrayRead() and const in Tao source code

changed TaoTerminationReason TaoConvergedReason
changed TaoLineSearchTerminationReason to TaoLineSearchConvergedReason

reason: consistency with the rest of PETSc

TAO: s/PETSC_NULL/NULL/ in manual

Touches a few non-TAO files.

fixed more Tao print format statements

set tao tolerances for single precision

BTW: there are all kinds of crazy tolerances all over the place; needs to be rationalized

fixes to tao to compile in single precision

changed TaoSolver usage to Tao

added petsc to front of tao public includes

stop using taosolver.h includes

merged TAO_INFINITY and SNES_VI_INF into PETSC_INFINITY

more formating of tao source code

fixed quote marks for includes to <>

remove tao-private include directory, private goes into petsc-private

convert most PetscMalloc() in tao to PetscMalloc1()
more formating of Tao source code

tao: remove trailing spaces from sources

tao: untabify sources

more format cleanup of tao