Work towards getting tidy clean

[steveklabnik]

For rust-lang/rust#40332 we need to get tidy clean. See https://travis-ci.org/rust-lang/rust/jobs/208767193#L500 for the failure.

This takes care of almost all of it. The last bit is some regexes that we have that are over 100 lines.

@alexcrichton what do you do in situations like https://github.com/rust-lang/book/blob/master/second-edition/tools/src/bin/link2print.rs#L42 ?

[steveklabnik]

The current set of failures:

\second-edition\tools\src\bin\lfp.rs:246: line longer than 100 chars
\second-edition\tools\src\bin\lfp.rs:253: line longer than 100 chars
\second-edition\tools\src\bin\lfp.rs:254: line longer than 100 chars
\second-edition\tools\src\bin\link2print.rs:52: line longer than 100 chars
\second-edition\tools\src\bin\link2print.rs:75: line longer than 100 chars
\second-edition\tools\src\bin\link2print.rs:77: line longer than 100 chars
\second-edition\tools\src\bin\link2print.rs:81: line longer than 100 chars
\second-edition\tools\src\bin\link2print.rs:344: line longer than 100 chars
\second-edition\tools\src\bin\link2print.rs:359: line longer than 100 chars

[steveklabnik]

Alex says it's fine to just ignore these files with tidy.