GitLab

- part of abstracted backend api now
- this function will only be used directly by legacy tools (mkpool),
  otherwise it will be within forthcoming provider-level create

- make usage more clear and also align better with other microservices

- this will be revised later

- will allow backends to take into account runtime parameters or other
  state in memory allocation/deallocation

- also remove deprecated *set_conf* functions

- shift to init_info struct similar to margo and abt-io
- add field for (currently unused) json

clang format

See merge request !18

minor memory bug fix in mkpool routine

See merge request !17

- scanf string field width modifier does not count null terminator

- in preparation for using json-c and/or bedrock instead

make string long enough for two chars and terminator

implement json configuration

See merge request !16