This change brings formatting specifiers available in `util.format` and
consequently, `console.*` closer to what is supported in all major
browsers. There is a breaking change with the `%d` specifier which
previously served a double purpose of formatting both integer and
floats. With this change, it will format only as integer.

- `%d` is being changed to format only as integer.
- `%i` is introduced as an alias to `%d`.
- `%f` is introduced to format floating point values.

When updating code, all instances of `%d` format strings that
were supplied with floats should be changed to the `%f` format string.

Fixes: nodejs#10292

This reverts commit f9b195b.