GitLab

* Adding System singleton to support multi-node (communication and topology)
* Adding multi-node parsing, rank and device wildcard expansion
* Adding multi-node topology, and various support functions
* Adding multi-node consistency validation of Config and Transfers
* Introducing SINGLE_KERNEL=1 to Makefile to speed up compilation during development
* Updating CHANGELOG.  Overhauling wildcard parsing.  Adding dryrun
* Client refactoring.  Introduction of tabular formatted results and a2a multi-rank preset
* Adding MPI support into CMakeFiles
* Cleaning up multi-node topology using TableHelper
* Reducing compile time by removing some kernel variants
* Updating documentation.  Adding nicrings preset
* Adding NIC_FILTER to allow NIC device filtering via regex
* Updating supported memory types
* Fixing P2P preset, and adding some extra memIndex utility functions