More OpenSSL3.0 fixes, for 3.0-beta2

[msalle]

OpenSSL 3.0 beta2 has removed a few functions:

• ERR_GET_FUNC() is no longer there and there is no simple replacement, so we best just comment out the one place it occurs.
• gsi_openssh (which we now include) uses FIPS_mode() which no longer exists in 3.0. Also here there is no easy replacement, since FIPS mode is quite differently enabled in 3.0. We add a macro via the new fips_mode_replacement.h that simply returns 0.

[fscheiner]

@msalle
Please, when rebasing your commits or adding additional commits to this PR, cancel the Travis CI builds as soon as possible. If you can't do that yourself, please wait until we had our next release in week 33 with further changes here. This to save credits.

[msalle]

Ok will do. I don't plan to change anything, nor to open any more PR.
OpenSSL 3.0 beta2 is hopefully the last beta, at least that's what's OpenSSL's plan. Also this adds the stuff needed for gsi-openssh which wasn't there when I tried the last time. I thought it would be silly to have a half-fixes version when we bring our a release soon.
Not sure actually whether I can cancel a Travis run.

[fscheiner]

Ok will do. I don't plan to change anything, nor to open any more PR.
OpenSSL 3.0 beta2 is hopefully the last beta, at least that's what's OpenSSL's plan. Also this adds the stuff needed for gsi-openssh which wasn't there when I tried the last time. I thought it would be silly to have a half-fixes version when we bring our a release soon.

I fully agree. And we only have a problem because we're running out of credits on Travis CI. In the future our build tests are going to be moved over to GitHub Actions and we might build on noncharged architectures over at Travis CI to ease that, @matyasselmeci will make sure of that.

[fscheiner]

Builds fine as per https://app.travis-ci.com/github/fscheiner/gct/builds/235196596

[fscheiner]

@ellert:
Just to be sure: As files from "gsi_openssh" are changed by this PR, too, should we also change the GSI-OpenSSH version in gsi_openssh/version.m4 in some way? Currently we have 8.6p1c. BTW, what's the c for in this version string?

@msalle

@fscheiner wrote:
Please, when rebasing your commits or adding additional commits to this PR, cancel the Travis CI builds as soon as possible. If you can't do that yourself, please wait until we had our next release in week 33 with further changes here. This to save credits.

Not sure actually whether I can cancel a Travis run.

I think it should work, as you are a member of our gridcf organization.

[fscheiner]

I'm merging this now and will afterwards create a tag for our next release candidate of the GCT.