[lto] remove dw2_asm_output_data call from write_global_references

[Ollie Wild]

The write_global_references function currently bypasses the LTO
serialization framework by calling dw2_asm_output_data directly.  This
bypasses the lto_write_section_data language hook, which in turn
breaks direct-to-elf serialization (patch pending) inside lto1.

This patch replaces the dw2_asm_output_data calls with calls to
lang_hooks.lto.write_section_data.

Ollie


2008-06-23  Ollie Wild  <aaw@google.com>

        * lto-section-out.c (dwarf2asm.h): Remove include.
        (write_global_references): Replace dw2_asm_output_data calls with a
        single call to lang_hooks.lto.write_section_data.
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