{,scripts/}Makefile:
- Remove gometalinter, install golangci-lint.
- Remove distinction between tools and devtools.
Just tools is enough.
- test_lint -> lint
Migrating away from underscore separated names.
- Remove unnecessary targets.
- Drop tendermint/lint. Incompatbile with golangci-lint
and no longer necessary anyway.
- Fix misleading message in go-mod-cache.
- New ci-target to avoid download tools twice.
- Run tests with -mod=readonly.
Port tools/gometalinter.json to .golangci.yml
Update CircleCI config accordingly.
Closes: #3896
cdf2b7a7c5