Update some stuff related to the syscalls change:
 - restart syscalls which return ERESETARTSYS
 - make code to restart a syscall common
 - keep a process-wide pending signal set to store as-yet
   undelivered signals (only used in 2.4 mode; TODO: siginfo, queues)
 - make execve work a bit better - it is impossible to recover from
   execve failing, so we try to check that it will before running the
   syscall itself (also fixes bug with SuSE 8.2 kernel)


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1964 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/vg_mylibc.c b/coregrind/vg_mylibc.c
index 92addf4..34fe6cc 100644
--- a/coregrind/vg_mylibc.c
+++ b/coregrind/vg_mylibc.c
@@ -1209,7 +1209,7 @@
 {
    Int res;
    res = VG_(do_syscall)(__NR_stat, (UInt)file_name, (UInt)buf);
-   return VG_(is_kerror)(res) ? (-1) : 0;
+   return res;			/* return -ve error */
 }
 
 Int VG_(fstat) ( Int fd, struct vki_stat* buf )