Minor modifications (eoRng function increment_position(), tests file and
compilation/installation script).

Failed tests:
From SMP: t-smpMW_eoEasyEA (OTHER_FAULT)
From EOMPI (issue #34): t-mpi-parallelApply (OTHER_FAULT)
	                t-mpi-wrapper (NUMERICAL)
	                t-mpi-multipleRoles (OTHER_FAULT)
	                t-mpi-distrib-exp (OTHER_FAULT)