Add a dist component for cg_gcc

[Kobzol]

try-job: dist-x86_64-linux

[Kobzol]

@bors try

[antoyo]

You seem to be making changes to the dylibs stuff, so don't hesitate to ask me to test that this still works for cross-compiling rustc if you need me to.

[rust-bors]

💔 Test for 07629c3 failed: CI. Failed jobs:

• try - dist-x86_64-linux (web logs, enhanced plaintext logs)

[Kobzol]

I don't think my changes should affect the multi-target libgccjit dylib building, but if you can try, that would be helpful, of course :)

@bors try

[rust-bors]

☀️ Try build successful (CI)
Build commit: 09e4f11 (09e4f11d243b60bb64549da0285de0c149f80c9c, parent: 1b4325211c3228dd10eea12e9b3f749f87363d95)

[antoyo]

I don't think my changes should affect the multi-target libgccjit dylib building, but if you can try, that would be helpful, of course :)

Ok. Please tell me when this is ready and I'll do the test locally.

[Kobzol]

It is ready now, just waiting for #150535 to be reviewed and merged.

[antoyo]

It is ready now, just waiting for #150535 to be reviewed and merged.

I made my test and everything still seems to work.

[bors]

☔ The latest upstream changes (presumably #150535) made this pull request unmergeable. Please resolve the merge conflicts.

[rust-bors]

☔ The latest upstream changes made this pull request unmergeable. Please resolve the merge conflicts.

[rustbot]

Some changes occurred in src/tools/opt-dist

cc @Kobzol

[rustbot]

r? @clubby789

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[Kobzol]

r? @jieyouxu