Use GASPI data types

See merge request rui.machado/gpi-2!1

Revert "fix for omnipath: changing gaspi_notification_id from unsigned int to byte length, because omnipath writes single bytes at a time, which can result in races because (a) unexpected notification value is read out (b) zero value after reset is filled, bug fix: restrict the notification value to byte length which can not be overwritten: fix has been tested on Omnipath system at kraken.cerfacs.fr"

This reverts commit 7b65525c.

fix for omnipath: changing gaspi_notification_id from unsigned int to byte length, because omnipath writes single bytes at a time, which can result in races because (a) unexpected notification value is read out (b) zero value after reset is filled, bug fix: restrict the notification value to byte length which can not be overwritten: fix has been tested on Omnipath system at kraken.cerfacs.fr

- compare with value returned by _rw_list_elem_max.
- in debug mode.
- addresses in part #52 (github).

- make segments available locally by setting flag (trans).
- adds test.
- closes #53 (github).

- verify number of ranks before trying to register segment in group.
- modify test to return success when running single instance.

already in use.

- as opposed to silently return success.
- modify test to reflect desired behavior.

- instead of 2 times the same.

- the spec (version 17.1) says "Bind to a segment with an existing
  segment ID (regardless of bind or allocated) results in undefined
  behavior.
- be conservative and return GASPI_ERR_INV_SEG.
- adds test.
- closes #45 (github).

- use FC and FCFLAGS

- close #18.

- given the type (notification_id_t) that check is erroneous.

- given the member type the check is erroneous.

Part of series to remove and clean-up GPU code.

Part of series to remove and clean-up GPU code.

Part of series to remove and clean-up GPU code.

Part of series to remove and clean-up GPU code.

Part of series to remove and clean-up GPU code.

- more consistent with spec.

- more spec compliant.
- closes #39 (github).

- spec compliant.
- closes #40 (github).

- spec compliant.
- closes #41 (github).