Fix gcc 3.4.6 build with newer host libc versions

The build of gcc 3.4.6 fails when host libc is too new.
I pulled the fix from this bug report:

http://bugs.openembedded.net/show_bug.cgi?id=4626

Signed-off-by: Wade Berrier <wberrier@gmail.com>

toolchain/gcc/3.4.6/950-open_ocreat_mode.patch

@@ -0,0 +1,11 @@
+--- gcc-3.4.6/gcc/collect2.c.orig	2009-05-11 13:00:31.000000000 -0600
++++ gcc-3.4.6/gcc/collect2.c	2009-05-11 13:00:26.000000000 -0600
+@@ -1534,7 +1534,7 @@
+   if (redir)
+     {
+       /* Open response file.  */
+-      redir_handle = open (redir, O_WRONLY | O_TRUNC | O_CREAT);
++      redir_handle = open (redir, O_WRONLY | O_TRUNC | O_CREAT, O_RDWR);
+ 
+       /* Duplicate the stdout and stderr file handles
+ 	 so they can be restored later.  */