Make 102_alignas independend of architecture

alignment of double is of course depending on the target,
so the .expect file was arch dependend.  Fix this by simply doing
some comparison tests.

tests/tests2/102_alignas.c

@@ -23,6 +23,7 @@ extern int printf(const char*, ...);
 int main()
 {
   printf("%d %d %d %d\n",
-         alignof(i1), alignof(i4), alignof(i5), alignof(i8));
+         alignof(i1) == 16, alignof(i4) == alignof(double),
+         alignof(i5) == alignof(int) , alignof(i8) == 16);
   return 0;
 }

tests/tests2/102_alignas.expect

@@ -1 +1 @@
-16 8 4 16
+1 1 1 1