Fixes: rust-lang#79725 Some macros can create a situation where `fn_sig_span` and `body_span` map to different files. New documentation on coverage tests incorrectly assumed multiple test binaries could just be listed at the end of the `llvm-cov` command, but it turns out each binary needs a `--object` prefix. This PR fixes the bug and updates the documentation to correct that issue. It also fixes a few other minor issues in internal implementation comments, and adds documentation on getting coverage results for doc tests.

Fixes to Rust coverage#79818bors merged 1 commit intorust-lang:masterrust-lang/rust:masterfrom richkadel:llvm-coverage-counters-2.1.0richkadel/rust:llvm-coverage-counters-2.1.0Copy head branch name to clipboard

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Commits on Dec 8, 2020

Fixes to Rust coverage

Fixes to Rust coverage#79818
bors merged 1 commit intorust-lang:masterfrom
richkadel:llvm-coverage-counters-2.1.0