added ifdef

Change-Id: I9005fe5228fc6ec63fef8a8beadb2274ff9bc768
Merge branch 'qmmm' of ssh://gerrit.gromacs.org:29418/gromacs into qmmm

Conflicts:
	src/gromacs/mmslave/mmslave_test.c

Change-Id: I51a84c41d41782b256d6b71e981cce26c9ba7dc5