fixes for some examples to work with quad precision, eg. no direct call to math functions

fixes for single precision and complex mostly in Fortran code which did not handle single precision properly at all

missing.py: fix behavior with feature test macros

PETSc creates prototypes for drand48() when it is not defined in the
headers tested by configure. If configure does not define feature test
macros,

missing.py: fix behavior with feature test macros

PETSc creates prototypes for drand48() when it is not defined in the
headers tested by configure. If configure does not define feature test
macros, this can lead to duplicate definitions when feature test macros
are defined later.

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Merge branch 'barry/fix-matlab'

don't use non-portable and also dependent on floating point precision system level math constants

fix a couple compiler warnings/errors (depending on compiler) for Matlab engine code

replace all echo in test/tutorial makefiles with printf since echo behaves differently on different systems

Merge branch 'barry/update-xxxviewfromoptions'

Merge branch 'barry/tikz'

Merge branch 'barry/reduce-dmsetup-da-memoryusage'

removed unused variable

Merge branch 'master' into barry/reduce-dmsetup-da-memoryusage

Conflicts:
src/dm/examples/tests/ex15.c
src/dm/examples/tutorials/ex3.c
src/dm/impls/da/da2.c
src/dm/impls/da/da3.c

Merged master into barry/update-xxxviewfromoptions

added vertical text and text size for TikZ, now handles simple line plots

added PetscViewerDrawSetDrawType() and PetscOptions[Get]Viewer() support for -viewer_type draw:tikz

Viewer: fix bad PetscNew merged from 'barry/fix-singleton-viewer'

Merge branch 'barry/saws-push-header-body'

Merge branch 'barry/fix-singleton-viewer'

Merge branch 'barry/fix-mpiint-petscoptionsgetint'

Conflicts:
src/ksp/pc/impls/redistribute/redistribute.c
src/mat/impls/aij/mpi/mpiaij.c
src/mat/impls/dense/mpi/mpidense.c
src/mat/utils/matstas

Merge branch 'barry/fix-mpiint-petscoptionsgetint'

Conflicts:
src/ksp/pc/impls/redistribute/redistribute.c
src/mat/impls/aij/mpi/mpiaij.c
src/mat/impls/dense/mpi/mpidense.c
src/mat/utils/matstash.c
src/snes/examples/tutorials/ex28.c
src/sys/objects/pinit.c
src/vec/is/ao/impls/memscalable/aomemscalable.c

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updated for new SAWs interface for pushing and poping bodies and headers

BuildTwoSided: distinguish events BuildTwoSided vs BuildTwoSidedF

Sys: add event BuildTwoSided

Sys: drop explicit type arguments from PetscNew() and PetscNewLog()

git grep -l 'PetscNew\(Log\)\?(' -- $1 | xargs perl -pi -e '
s@PetscNew\([^,;()]+ *, *@PetscNew(@;
s@PetscNewLog\(([^,;()]+) *,[^,

Sys: drop explicit type arguments from PetscNew() and PetscNewLog()

git grep -l 'PetscNew\(Log\)\?(' -- $1 | xargs perl -pi -e '
s@PetscNew\([^,;()]+ *, *@PetscNew(@;
s@PetscNewLog\(([^,;()]+) *,[^,;()]+, *@PetscNewLog($1,@'

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Sys: add PetscCalloc[1-7]

Replace lots of places where PetscMemzero is called immediately after
allocation.

Sys: add PetscMalloc1 macro, array allocation without redundant types

The type is inferred from the pointer return type. This patch is
automated via the following script:

git grep -l 'PetscMalloc(

Sys: add PetscMalloc1 macro, array allocation without redundant types

The type is inferred from the pointer return type. This patch is
automated via the following script:

git grep -l 'PetscMalloc(.*sizeof' src | xargs perl -pi -e 's@PetscMalloc\(([^,;]*[^,; ]) *\* *sizeof\([^,;()]+\),@PetscMalloc1($1,@'

This commit contains an additional bug-fix in csrperm.c, fixing pointer
arity. The code was introduced in 2006, but the allocation could not
have been correct at any time. This probably means that
MatDuplicate_SeqAIJPERM has never been tested.

a54129beb540034ba105796c682d589e7e1111f2
Richard Tran Mills <rmills@ornl.gov>

Added MATSEQCSRPERM support for MatDuplicate() and conversion to/from
MATSEQAIJ. Note that these changes are not quite debugged.

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