* exceptions.cc (signal_exit): Kill any executing child process if we're dying.

* path.h: Remove unneeded extern.
* spawn.cc (std_suffixes): Make static.  Don't set dwProcessId here since it
makes the process unsignalable.  Set strace flag that this is an execed process
stub.
* strace.cc (strace::vsprntf): Use strace flag to indicate when to visually
flag that this is an exec stub.
* include/sys/strace.h (strace): Add 'execing' flag.

winsup/cygwin/spawn.cc

@@ -37,7 +37,7 @@ details. */
 
 #define LINE_BUF_CHUNK (MAX_PATH * 2)
 
-suffix_info std_suffixes[] =
+static suffix_info std_suffixes[] =
 {
   suffix_info (".exe", 1), suffix_info ("", 1),
   suffix_info (".com"), suffix_info (".cmd"),
@@ -45,6 +45,8 @@ suffix_info std_suffixes[] =
   suffix_info (NULL)
 };
 
+HANDLE hExeced;
+
 /* Add .exe to PROG if not already present and see if that exists.
    If not, return PROG (converted from posix to win32 rules if necessary).
    The result is always BUF.
@@ -671,7 +673,8 @@ skip_arg_parsing:
       /* These are both duplicated in the child code.  We do this here,
 	 primarily for strace. */
       strcpy (myself->progname, real_path);
-      myself->dwProcessId = pi.dwProcessId;
+      strace.execing = 1;
+      hExeced = pi.hProcess;
     }
   else
     {