1. Rename in a backward compatible way
2. Remove gosec default exclude list because gosec is already disabled
by default.
3. Warn about unmatched linter names in //nolint directives
4. Process linter names in //nolint directives in upper case
5. Disable gosec for golangci-lint in .golangci.yml
Although the FAQ does eventually mention that
--new-from-rev=origin/master is the right way, --help does not and
using --new in CI is a terrible pitfall.
Make --help point users to -new-from-rev=HEAD~ for CI setups.
Also use HEAD~ instead of origin/master, since HEAD~ is more
universally applicable, e.g. if golangci-lint is ran against a release
branch.
