Fix incorrect use of VG_(tool_panic). Adapt checker script accordingly.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14544 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/m_libcprint.c b/coregrind/m_libcprint.c
index 8d30b00..e367767 100644
--- a/coregrind/m_libcprint.c
+++ b/coregrind/m_libcprint.c
@@ -315,7 +315,7 @@
       case 1: ex = 10;    break;
       case 2: ex = 100;   break;
       case 3: ex = 1000;  break;
-      default: VG_(tool_panic)("Currently can only handle 3 decimal places");
+      default: VG_(core_panic)("Currently can only handle 3 decimal places");
       }
       p2 = ((100*n*ex) / m) % ex;
       // Have to generate the format string in order to be flexible about