fix mkdir with -p

Author: liufengyun

project/scripts/cmdTests

@@ -84,8 +84,8 @@ mkdir -p out/scriptedtest0
 
 # check that `dotc -from-tasty` compiles and `dotr` runs it
 echo "testing ./bin/dotc -from-tasty and dotr -classpath"
-mkdir out/scriptedtest1
-mkdir out/scriptedtest2
+mkdir -p out/scriptedtest1
+mkdir -p out/scriptedtest2
 ./bin/dotc tests/pos/sbtDotrTest.scala -d out/scriptedtest1/
 ./bin/dotc -from-tasty -classpath out/scriptedtest1/ -d out/scriptedtest2/ dotrtest.Test
 ./bin/dotr -classpath out/scriptedtest2/ dotrtest.Test