[lto][patch] Add comdat support on the symbol table

[Rafael Espindola]

This patch goes on top of my previous ones.

gcc/
2008-07-20  Rafael Avila de Espindola  <espindola@google.com>

	* lto-section-out.c (produce_symtab_1): Write comdat.

lto-plugin/
2008-07-20  Rafael Avila de Espindola  <espindola@google.com>
	* lto-symtab.c (table_entry): Add comdat.
	(parse_table_entry): Read comdat.

Cheers,
-- 
Rafael Avila de Espindola

Google Ireland Ltd.
Gordon House
Barrow Street
Dublin 4
Ireland

Registered in Dublin, Ireland
Registration Number: 368047