ash: fix $IFS handling in read. closes bug 235

diff --git a/shell/ash_test/ash-read/read_ifs.right b/shell/ash_test/ash-read/read_ifs.right
new file mode 100644
index 0000000..027ecd1
--- /dev/null
+++ b/shell/ash_test/ash-read/read_ifs.right
@@ -0,0 +1,7 @@
+.a. .b. .c.
+.a. .b. .c.
+.a. .. .b,c.
+.a. .. .b,c.
+.a. .. .c.
+.a. .. .c. .d.
+.a. .. .b,c,d  ,  ,.