Add direct lustre api calls

Makefile.am

configure.ac

doc/RTD/source/ParameterFiles/parameter_description.rst

examples/parameter_example.yml

src/Makefile.am

src/distributed_io.c

src/engine.c

src/engine.h

src/engine_config.c

src/restart.c

src/swift_lustre_api.c

src/swift_lustre_api.h