Cannot properly test "ex-cc-static-bundled" as it's multi file example

[budziq]

trafficstars

Currently part of the https://rust-lang-nursery.github.io/rust-cookbook/build_tools.html#ex-cc-static-bundled example was made ignore due to it being both multifile and build.rs based example (unfortunately, skeptic does not support either of these cases). Otherwise we trigger failure on appveor https://ci.appveyor.com/project/rust-lang-libs/rust-cookbook/build/1.0.49/job/wka0wjreymr1alw4

[AndyGauge]

Is this related? https://github.com/budziq/rust-skeptic/issues/76

[budziq]

@AndyGauge yep