added test for #717

Author: ryuukk

tests/tc717/expected.txt

@@ -0,0 +1,8 @@
+identifiers
+alignof	k			
+init	k			
+mangleof	k			
+max	k			
+min	k			
+sizeof	k			
+stringof	k			

tests/tc717/file.d

@@ -0,0 +1,15 @@
+struct A
+{
+    B b;
+
+    void test()
+    {
+        auto here = b.inside_b;
+        here.
+    }
+}
+
+struct B
+{
+    int inside_b;
+}

tests/tc717/run.sh

@@ -0,0 +1,5 @@
+set -e
+set -u
+
+../../bin/dcd-client $1 file.d --extended -c88 > actual.txt
+diff actual.txt expected.txt --strip-trailing-cr