gcc.fix_longversionstring

Freescale version string is really long, and it can overflow a
buffer. This patch extends the size of the buffer.

--- gcc-4.6.0/gcc/dwarf2out.c-orig	2011-03-18 11:22:01.000000000 -0500
+++ gcc-4.6.0/gcc/dwarf2out.c	2011-05-06 10:24:24.114277925 -0500
@@ -20005,7 +20005,7 @@
 gen_compile_unit_die (const char *filename)
 {
   dw_die_ref die;
-  char producer[250];
+  char producer[2500];
   const char *language_string = lang_hooks.name;
   int language;