tree.c (cp_build_qualified_type_real): Use get_qualified_type.

        * tree.c (cp_build_qualified_type_real): Use get_qualified_type.
        (build_cplus_array_type): Use cp_build_qualified_type, not
        TYPE_MAIN_VARIANT, to get an unqualified version.

From-SVN: r45147

gcc/testsuite/g++.dg/ext/align1.C

+// Test that __attribute__ ((aligned)) is preserved.
+
+extern "C" int printf (const char *, ...);
+
+typedef float at[4][4] __attribute__ ((aligned (64)));
+
+float dummy[4][4][15];
+
+static volatile at a1[15];
+
+float f1 __attribute__ ((aligned (64)));
+
+int main()
+{
+  printf ("%d %d\n", __alignof (a1), __alignof (f1));
+  return (__alignof (a1) < __alignof (f1));
+}