[commit/windows] Add thread ID in SuspendThread error warning message.

[Joel Brobecker <brobecker@adacore.com>]

From: brobecke <brobecke@metz.(none)>

Hello,

This patch adds the thread ID to a warning printed when a call to
SuspendThread fails. It will help investigate issues, particularly
when correlated with the various debug traces provided by the
windows-nat module.

For the record, the output has been changed from...

    warning: SuspendThread failed. (winerr 6)

... to ...

    warning: SuspendThread (tid=0x720) failed. (winerr 6)

gdb/ChangeLog:

        * window-nat.c (thread_rec): Add thread ID in SuspendThread
        warning message.

Tested on x86-windows, and checked in.

---
 gdb/ChangeLog     |    5 +++++
 gdb/windows-nat.c |    5 +++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 493da1d..2fb7ac8 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2013-06-11  Joel Brobecker  <brobecker@adacore.com>
+
+	* window-nat.c (thread_rec): Add thread ID in SuspendThread
+	warning message.
+
 2013-06-08  Pedro Alves  <pedro@codesourcery.com>
 	    Yao Qi  <yao@codesourcery.com>
 
diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
index 8320d27..66c44eb 100644
--- a/gdb/windows-nat.c
+++ b/gdb/windows-nat.c
@@ -311,8 +311,9 @@ thread_rec (DWORD id, int get_context)
 		if (SuspendThread (th->h) == (DWORD) -1)
 		  {
 		    DWORD err = GetLastError ();
-		    warning (_("SuspendThread failed. (winerr %u)"),
-			     (unsigned) err);
+		    warning (_("SuspendThread (tid=0x%x) failed."
+			       " (winerr %d)"),
+			     (unsigned) id, (unsigned) err);
 		    return NULL;
 		  }
 		th->suspended = 1;
-- 
1.7.10.4