Update output files after change in PetscObjectPrintClassNamePrefixType

fix a variety of set but not used detected by clang static analyzer

add ierr and return ierr; to many PetscFinalize() in examples
add ierr and if (ierr) return ierr; to some PetscInitialize() in exa

fix a variety of set but not used detected by clang static analyzer

add ierr and return ierr; to many PetscFinalize() in examples
add ierr and if (ierr) return ierr; to some PetscInitialize() in examples

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Changed the C examples to return the error code in main()

labeled a variety of additional internal functions as static
to prevent them from being publically available in the library

fixed up formatting of references in manualpages to consistent style

References:
+ 1. - ref1
. 2. - ref2
- 3. - ref3

previously the formatting was varied and ugly

limit blackscholes test runs to 9 iterations to have same convergence history for double and quad

set -tao_max_it 5 for test example to produce same convergence history with quad and double precision

add -tao_max_it to produce same convergence history for double and quad precision in test output

Merge branch 'master' into barry/petscoptions-object