HAVE_FORTRAN should be USE_FORTRAN_BINDINGS since it is about generating the Fortran bindings, not about if the Fortran compiler exists

Merge remote-tracking branch 'origin/release'

Don't use PetscMemcpy() or PetscArraycpy() to copy the ops struct

change to consistent use of ch_xxx for chapter names in the docs, instead of a mix of ch_xx and chapter_xx

Skip zeroing vector if its norm is known to be zero; optimization

Set norm values of zero for newly created vectors (which are always filled with zeros)

Format the ftn-custom files with clang-format. Apparently no particular reason we did not format them initially

non-test and tutorial makefiles only need rules.doc not the full rules

Commit-type: documentation