RCBPtn read/write fix

[hgangwar]

• Adds the $\text{dimVar}$ in $\text{RCBPtn}$ read/write functions.
• Fixes the $\text{cutsVar}$ scheduling.

[cwsmith]

@hgangwar Would you mind pushing another very simple commit (i.e., add a non-offensive empty line somewhere in redev.cpp) so that our CI triggers again? This is the first commit to this repo in a very long time and github automatically disabled the build+test workflow. Nevermind. There is something wrong with that workflow (see https://github.com/SCOREC/redev/actions/runs/18237925126/job/51934949032).

[hgangwar]

redev/.github/workflows/cmake.yml

Lines 105 to 112 in ee37285

	run: /usr/bin/cmake $GITHUB_WORKSPACE/redev
	-DCMAKE_CXX_COMPILER=mpicxx
	-DCMAKE_CC_COMPILER=mpicc
	-DCMAKE_BUILD_TYPE=${{matrix.build_type}}
	-DADIOS2_DIR=${{runner.workspace}}/build-adios2/install/lib/cmake/adios2/
	-DADIOS2_HAVE_SST=ON
	-DADIOS2_BPLS_PATH=${{runner.workspace}}/build-adios2/install/bin/bpls
	-DBUILD_TESTING=ON

The workflow is not up to date with the current CMakeLists.txt. Perfstubs was introduced later and is now a required package.

[cwsmith]

adios2 vendors perfstubs ... even in the ancient version 2.9 that we are using. An issue for the CI problem is here: #50