X compilebench: Fix thinko: op/s -> s/op

We mesure time, not operations per second.

t/compilebench/doit.sh

@@ -49,17 +49,17 @@ for CC in gcc tcc; do
 	rm -f pystone_pypyx.{o,so}
 
 	for i in `seq $N`; do
-		export TIMEFORMAT="Benchmark${CC}compile 1 %R op/s"
+		export TIMEFORMAT="Benchmark${CC}compile 1 %R s/op"
 		time compile pystone_pypyx
 	done
 
 	for i in `seq $N`; do
-		export TIMEFORMAT="Benchmark${CC}link 1 %R op/s"
+		export TIMEFORMAT="Benchmark${CC}link 1 %R s/op"
 		time link pystone_pypyx
 	done
 
 	for i in `seq $N`; do
-		export TIMEFORMAT="Benchmark${CC}compile+link 1 %R op/s"
+		export TIMEFORMAT="Benchmark${CC}compile+link 1 %R s/op"
 		time compileandlink pystone_pypyx
 	done
 
@@ -73,7 +73,7 @@ for CC in gcc tcc; do
 	fi
 
 	for i in `seq $N`; do
-		export TIMEFORMAT="Benchmark${CC}compile+linkO2 1 %R op/s"
+		export TIMEFORMAT="Benchmark${CC}compile+linkO2 1 %R s/op"
 		time compileandlink pystone_pypyx "-O2"
 	done