gold patch committed: Fix handling of writable .eh_frame section

[Cary Coutant]

> I also fixed a
> possible lurking problem in the patch of 2010-10-17 in that
> increase_relro was not reset in the case where set_section_addresses is
> called a second time.

>        (Layout::set_segment_offsets): Reset increase_relro before calling
>        set_section_addresses a second time.

Am I not correct in reasoning that set_section_addresses() will not
get called a second time if there is a relro segment? Aligning the
relro segment is incompatible with trying to realign the data segment
to save a page.

-cary