Handle --all-features, --feature, --no-default-features

[sourcefrog]

These options need to be passed consistently to all of check, build, and test.

For example, time-rs/time can't build its tests unless --all-features is specified. time-rs/time#497

More generally people might want to test some crates with specific features.

#59 is about having custom options specifically for the build, but these seem important enough that they might be worth handling specifically.

--release would be another good one to add, either for crates where it significantly helps the test suite speed, or for crates like syn where the test suite insists on --release. (Tangentially, it might actually be a good idea in general, depending on the balance of time between linking and running the test suite...)
This could be tested with a specific testdata tree that fails to build unless a given feature is given.

[sourcefrog]

I think this is handled enough with --cargo-arg (-C) in 8a7126a and related changes. I can use this to build crates like time that don't pass their tests without --all-features.