Remove error in BGQ build test

Inge Gutheil from FZ Juelich pointed out, that the
configure test for BGQ failed due to typos.
These are corrected now

configure.ac

@@ -460,8 +460,8 @@ AC_MSG_CHECKING([whether we can compile with BGQ intrinsics])
 
 AC_LINK_IFELSE([AC_LANG_SOURCE([
   program test_bgq
-    VECTOR(REAL(8))::QPX_x2
-    real*8 :: hh(10,2))
+    VECTOR(REAL(8))::QPX_h2
+    real*8         :: hh(10,2)
     QPX_h2 = VEC_SPLATS(hh(2,2))
 
   end program