Duh.  Make the system buildable again following recent commit
of include/valgrind.h rev 1.10.

MERGE TO STABLE


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1459 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/vg_libpthread.c b/coregrind/vg_libpthread.c
index 18bea18..9848724 100644
--- a/coregrind/vg_libpthread.c
+++ b/coregrind/vg_libpthread.c
@@ -52,7 +52,11 @@
    myexit().  Also fprintf doesn't seem safe.
 */
 
+/* Sidestep the normal check which disallows using valgrind.h
+   directly. */
+#define __VALGRIND_SOMESKIN_H
 #include "valgrind.h"    /* For the request-passing mechanism */
+
 #include "vg_include.h"  /* For the VG_USERREQ__* constants */
 
 #define __USE_UNIX98