[LTO] Make Move lto-symtab.c out of lto/

[Diego Novillo]

2008/10/24 Doug Kwan (關振德) <dougkwan@google.com>:
> I tried but it seems that lto-symtab.c also depends on language
> specific things in the lto1 FE.  Basically we store symbol resolution
> in identifier nodes, so we use an lto1 identifier instead of the
> regular one.

How about having a symbol table indexed by DECL_UID and storing symbol
resolution in that table?  In fact, data_in.globals_index could be our
symbol table.

Diego.