Update s390_features.c for DFP.
Add a testcase.
Patch by Maran (maranp@linux.vnet.ibm.com).
Part of fixing BZ 307113.
See also VEX r2560.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13120 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/tests/s390x_features.c b/tests/s390x_features.c
index 4dde355..265e22a 100644
--- a/tests/s390x_features.c
+++ b/tests/s390x_features.c
@@ -225,6 +225,8 @@
       match = facilities & FAC_BIT(30);
    } else if (strcmp(feature, "s390x-fpext") == 0 ) {
       match = facilities & FAC_BIT(37);
+   } else if (strcmp(feature, "s390x-dfp") == 0 ) {
+      match = facilities & FAC_BIT(42);
    } else {
       return 2;          // Unrecognised feature.
    }