Enable domain parallelisation for intersite interaction.
Description
Enable domain parallelization for intersite interaction (DFT+U+V). This commit also introduces a fix for a problem occuring when the merged submesh is larger than the radial extension of the pseudo wavefunction.
News snippet
Enable domain parallelization for intersite interaction (DFT+U+V).
Checklist
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I have checked that my code follows the Octopus coding standards -
I have added tests for all the new features added in this request.
Edited by Martin Lueders