replace checkstyle with something faster and simpler #9023
Merged
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Competes with #9011.
This completely removes checkstyle, and enforces IllegalImport, RightCurly (UPDATE: and now UpperEll) via a simple line-based regex scan.
If @sebersole cares about EqualsHashCode
or UpperEll, I believe I can implement them too, using the exact same technology. Of course, EqualsHashCode probably can't be done quite perfectly using a regex, but it can certainly can be done in a way that's more than "good enough". (UpperEll can be implemented perfectly, since regexes are capable of tokenization.)