SFrame V3 MVP#1898
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updateandaccountare what https://sourceware.org/binutils/docs-2.46/sframe-spec.html#Changes-from-Version-2-to-Version-3 is about.Just like ld.bfd did, this change drops support for SFrame V2 due to how annoying it would be to support both formats at the same time, and the fact that the decisions by the distros to enable SFrame V2 by default were short-lived.
At the time of writing this description, glibc still can only read SFrame V2 (the changes are lingering on the mailing list), so I'm posting this as a draft. Hopefully it doesn't take too long from now before we can test it on the CI.
Can be tested with https://gist.github.com/mati865/5d5fead3a7cbefcbe9a609274a0d27eb if your system has Binutils 2.46.
This PR only ports existing code from SFrame V2 to V3. It doesn't add new
SFRAME_FDE_TYPE_FLEXorSFRAME_FDE_TYPE_DEFAULT.Fixes #1576