X compilebech: pystone2bench: Accept scientific format

pystone can say, e.g. "this machine benchmarks at 1.85343e+06 pystones"

t/compilebench/doit.sh

@@ -28,7 +28,7 @@ compileandlink() {
 pystone2bench() {
 	subj=$1
 	tail -1 |sed -e \
-	"s|^This machine benchmarks at \([0-9.]\+\) pystones/second$|Benchmark${subj}pystone 1 \1 pystone/s|"
+	"s|^This machine benchmarks at \([0-9.e+]\+\) pystones/second$|Benchmarkpystone/${subj} 1 \1 pystone/s|"
 }
 
 N=10