added MOAB citation from Tim

LOCDIR: fix all outdated paths and normalize trailing slash

Update performed by:

git ls-files '*/makefile' | xargs perl -pi -MFile::Basename \
-e 's!(LOCDIR[[:space:]]+=) *(.+)$!$1." ".dirnam

LOCDIR: fix all outdated paths and normalize trailing slash

Update performed by:

git ls-files '*/makefile' | xargs perl -pi -MFile::Basename \
-e 's!(LOCDIR[[:space:]]+=) *(.+)$!$1." ".dirname($ARGV)."/"!e'

Fortran auto must be fixed using 'make allfortranstubs' and the result
can be checked by 'bin/maint/checkloc.py'.

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DMMoab: Remove OBJSC from makefile

DMMoab: ops pointers initialized in DMCreate_Moab

DMCreate_Moab() calls PetscNewLog() so it's *required* to avoid
potential memory leaks, not just according to PETSc conventions.

DMMoab: fix test example makefile

DMMoab: close memory leaks by explicitly calling C++ destructors

* DMMoabCreateMoab() had 'new DM_Moab' overwriting the PetscNewLog()
allocation from DMCreate_Moab(). Now use placement new and exp

DMMoab: close memory leaks by explicitly calling C++ destructors

* DMMoabCreateMoab() had 'new DM_Moab' overwriting the PetscNewLog()
allocation from DMCreate_Moab(). Now use placement new and explicitly
call ~Range().

* Add missing call to vmoab->tag_range.~Range().

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DMMoab: interface does not require that all of PETSc be built using C++

DMMoab: include <sstream> to use ostringstream

DMMoab: do not mix CHKERRXX() with CHKERRQ()

Fixing uninitialized memory, and adding output.

Fixing compile error in dmmoab.

Changes suggested by Jed and Barry.

Changes suggested by Matt in pull request.

Adding DMMoab and VecMoab, along with various examples and tests.