…bver_bounds

* main: (1776 commits)
  Invert solution as discussed at Unidata#2618
  Correct a potential null pointer dereference.
  Fix a logic error that was resulting in an easy-to-miss error when running configure.
  Fix issue with dangling test file not getting cleaned up.
  Turn nczarr zip support off by default in cmake, add a status line indicating whether nczarr-zip-support is available, in libnetcdf.settings.
  Update the version of the cache action used by github action from v2 to v3.
  Explicit cast to unsigned char.
  More issues returned by sanitizer, related to attempts to assign MAX_UNSIGNED_CHAR (255) to a variable of type char.
  Fixed an issue where memcpy was potentially passed a null pointer.
  Correct another uninitialized issue.
  Correct undefined variable error.
  Fixing issues uncovered by compiling with '-fsanitize=undefined' and running nc_test/nc_test, in support of Unidata#1983, amongst others.  The cast as was being used was undefined behavior, and had to be worked around in a style approximating C++'s 'reinterpret_cast'
  Remove a stray character at the head file.
  Fix a distcheck failure with nczarr_test/run_interop.sh
  Turn benchmarks off by default. They require netcdf4, additional logic is required in order to have them on by default.
  Add execute bit to test scripts
  Fix missing endif statement
  Add generated parallel tests for nc_perf, cmake-based build system.
  Correct typo in CMakeLists.txt
  Wiring performance benchmarks into cmake, cleaned up serial compression performance test dependency on MPI.
  ...

* main:
  Fixed various UBSan warnings about working with NULL pointers
  Fixed misaligned memory access flagged by UBSan
  disable test that depend on ncpathcvt in cmake build w/o utilities
  Update RELEASENOTES
  Remove the execinfo capability
  fix memory leak
  ckp
  remove conflicts
  Fixed various UBSan warnings about invalid bit shifting
  Add fenceposting so DLL flags are only introduced wwhen we are compiling DLL-based shared libraries.
  Working to get the proposed change working with Visual studio
  CMake: Use helper libraries for nczarr tests
  Fix most float conversion warnings
  Update release notes
  Update internal tinyxml2 code to the latest version
  Update release notes
  Improve fetch performance of DAP4

Previously, setting some HDF5 CMake config flags directly would skip
both the check for HDF5 1.10 and setting the `HDF5_HAS_SWMR` flag

Libver bounds already taken care of elsewhere, and merely opening the
file in SWMR mode will correctly set format to at least v110