IRIX: Move src/sgistuff to platform/IRIX Change-Id: Ie7e17859c346e472af1d07adf2c359250f71d653 Reviewed-on: http://gerrit.openafs.org/11634 Reviewed-by: Daria Brashear <shadow@your-file-system.com> Tested-by: BuildBot <buildbot@rampaginggeek.com>