Rollup merge of #147288 - Zalathar:directive, r=jieyouxu

compiletest: Make `DirectiveLine` responsible for name/value splitting

- Follow-up to rust-lang/rust#147170.

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Now that all of the directive-parsing functions have access to a `DirectiveLine`, we can move all of the ad-hoc name/value splitting code into `DirectiveLine` itself, making directive parsing simpler and more consistent.

The first commit is just moving code into a submodule, so the actual changes can be seen in the subsequent commits.

r? jieyouxu

0 files changed, 0 insertions, 0 deletions