Bootstrap: append libjemalloc_pic.a

[ishitatsuyuki]

Fix #35349

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @nikomatsakis (or someone else) soon.

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[alexcrichton]

@bors: r+

Thanks!

[bors]

📌 Commit 149242e has been approved by alexcrichton

[bors]

⌛ Testing commit 149242e with merge 4ef2c3e...

[bors]

☀️ Test successful - status-appveyor, status-travis
Approved by: alexcrichton
Pushing 4ef2c3e to master...

[ishitatsuyuki]

Please cherry-pick to 1.15 release for sure, since this should be applied to reduce pain of package maintainers.