ash: add all hush parsing tests to ast tests

All pass.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash_test/ash-parsing/escape3.tests b/shell/ash_test/ash-parsing/escape3.tests
new file mode 100755
index 0000000..18705bd
--- /dev/null
+++ b/shell/ash_test/ash-parsing/escape3.tests
@@ -0,0 +1,10 @@
+test "$CONFIG_FEATURE_FANCY_ECHO" = "y" || exit 77
+
+v='a \ b \\ c \\\ d \\\\ e'
+echo v: $v
+echo v: "$v"
+echo Unquoted:
+for a in $v; do echo .$a.; done
+echo Quoted:
+for a in $v; do echo ".$a."; done
+echo done