* errno.cc (errmap): Add error codes for invalid binaries.

* exec.cc (execvp): Call spawnve with _P_PATH_TYPE_EXEC flag
	from here.
	(execvpe): Ditto.
	* spawn.cc (spawn_guts): Filter _P_PATH_TYPE_EXEC from mode and
	store in p_type_exec.  Call av::fixup with addtional p_type_exec
	argument.
	(spawnve): Check for filtered mode.
	(spawnvpe): Add _P_PATH_TYPE_EXEC flag when calling spawnve.
	(av::fixup): Accept additional bool parameter p_type_exec.  Only check
	for script if p_type_exec is true.
	* winf.h (_P_PATH_TYPE_EXEC): Define.
	(_P_MODE): Define.
	(av::fixup): Declare with additional bool parameter.

winsup/cygwin/errno.cc

@@ -1,7 +1,7 @@
 /* errno.cc: errno-related functions
 
    Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-   2006, 2008, 2009, 2010 Red Hat, Inc.
+   2006, 2008, 2009, 2010, 2011 Red Hat, Inc.
 
 This file is part of Cygwin.
 
@@ -37,6 +37,7 @@ static NO_COPY struct
   X (ACTIVE_CONNECTIONS,	EAGAIN),
   X (ALREADY_EXISTS,		EEXIST),
   X (BAD_DEVICE,		ENODEV),
+  X (BAD_EXE_FORMAT,		ENOEXEC),
   X (BAD_NETPATH,		ENOENT),
   X (BAD_NET_NAME,		ENOENT),
   X (BAD_NET_RESP,		ENOSYS),
@@ -67,6 +68,7 @@ static NO_COPY struct
   X (EA_TABLE_FULL,		ENOSPC),
   X (END_OF_MEDIA,		ENOSPC),
   X (EOM_OVERFLOW,		EIO),
+  X (EXE_MARKED_INVALID,	ENOEXEC),
   X (FILEMARK_DETECTED,		EIO),
   X (FILENAME_EXCED_RANGE,	ENAMETOOLONG),
   X (FILE_CORRUPT,		EEXIST),
@@ -81,11 +83,13 @@ static NO_COPY struct
   X (INVALID_DATA,		EINVAL),
   X (INVALID_DRIVE,		ENODEV),
   X (INVALID_EA_NAME,		EINVAL),
+  X (INVALID_EXE_SIGNATURE,	ENOEXEC),
   X (INVALID_FUNCTION,		EBADRQC),
   X (INVALID_HANDLE,		EBADF),
   X (INVALID_NAME,		ENOENT),
   X (INVALID_PARAMETER,		EINVAL),
   X (INVALID_SIGNAL_NUMBER,	EINVAL),
+  X (IOPL_NOT_ENABLED,		ENOEXEC),
   X (IO_DEVICE,			EIO),
   X (IO_PENDING,		EAGAIN),
   X (LOCK_VIOLATION,		EACCES),