Merge branch '16-portable-echo-into-rdbg' into 'master'

Drive rdbg tests in a more portable way

Closes #16

See merge request !12

test/async-unison/Makefile

@@ -20,7 +20,7 @@ lurette: ring.cmxs ring_oracle.lus
 		-oracle "lv6 -2c-exec ring_oracle.lus -n oracle" 
 
 rdbg_test: ring.ml
-	echo "\nnr\nsd\nq\n" | rdbg  -o ring.rif -l 10000 -env "$(sasa) -vl 1 ring.dot -cd" 
+	printf "\nnr\nsd\nq\n" | rdbg  -o ring.rif -l 10000 -env "$(sasa) -vl 1 ring.dot -cd" 
 
 rdbg: ring.ml
 	rdbg -o ring.rif -l 10000 -env "sasa -vl 1 ring.dot -cd" 

test/dfs/Makefile

@@ -35,7 +35,7 @@ rdbg2: g.lut g.ml
       -sut-nd "lutin g.lut -n dummy"
 
 rdbg_test: g.lut g.ml
-	echo "\nnr\nsd\nq\n" | rdbg -o lurette.rif  \
+	printf "\nnr\nsd\nq\n" | rdbg -o lurette.rif  \
       -env "$(sasa) g.dot  -rif" \
       -sut-nd "lutin g.lut -n dummy"
 

test/dijkstra-ring/Makefile

@@ -33,7 +33,7 @@ rdbg2: ring.ml ring.lut
       -sut-nd "lutin ring.lut -n distributed"\
 
 rdbg_test: ring.ml
-	echo "\nnr\nsd\nq\n" | rdbg  -o ring.rif -l 10000 -sut "$(sasa) -vl 1 ring.dot -dd" 
+	printf "\nnr\nsd\nq\n" | rdbg  -o ring.rif -l 10000 -sut "$(sasa) -vl 1 ring.dot -dd" 
 
 lurette1: ring.lut ring_oracle.lus
 	lurette \

test/unison/Makefile

@@ -58,7 +58,7 @@ rdbg2: ring.ml
 	rdbg -o unison.rif -sut "sasa ring.dot -custd -rif" 
 
 rdbg_test: ring.ml
-	echo "\nn\ns\nsi 4\nn\nni 3\nq\n" | rdbg -o unison.rif  \
+	printf "\nn\ns\nsi 4\nn\nni 3\nq\n" | rdbg -o unison.rif  \
       -sut "$(sasa) ring.dot -sd -rif" \
 
 -include ../Makefile.inc