[PATCH,RFC] collect2 LTO for AIX

[Martin Liška]

Hi.

Recently I've introduced a new .gnu.lto_.lto section that
is supposed to provide meta information about a LTO bytecode.

As a further step, I'm planning to teach binutils about
existence of the section and I'll remove in the future
emission of __gnu_lto_slim and __gnu_lto_v1 symbols.
The former one is used by binutils to identify if
an object is a slim LTO object. The later one is currently
used only in gcc/collect2.c and was added by David's patch.

My question is: Can we remove __gnu_lto_v1 right now and
XCOFF will use something similar to ELF (has_lto_section)?
Can you David help me with that please?

Thank you,
Martin