2015-04-10: added test for dotted pair (bug ff)

added test for dotted pair (bug ff)

diff --git a/tests/dotted-pair.scm b/tests/dotted-pair.scm
new file mode 100644
--- /dev/null
+++ b/tests/dotted-pair.scm
@@ -0,0 +1,3 @@
+(use-modules ((ice-9 popen) #:select ((open-input-pipe . oip))))
+
+
diff --git a/tests/dotted-pair.w b/tests/dotted-pair.w
new file mode 100644
--- /dev/null
+++ b/tests/dotted-pair.w
@@ -0,0 +1,1 @@
+use-modules : (ice-9 popen) #:select ((open-input-pipe . oip))