Currently, it's not possible to override the awk `--lint` option with
```viml
let g:ale_awk_gawk_options = '--lint=no-ext'
```
although this could be useful for those who only use gawk and don't want to get these lint errors:
> FEATURE X is a gawk extension
The idea is to move the default `--lint` option before the `awk_gawk_options` in the gawk.vim code to give the custom `--lint=...` option a higher precedence.
Co-authored-by: Barnabás Ágoston <barna@agoston.dev>
* Fixed (g)awk linter
* Made it secure, albeit less useful.
* Added gawk handler; the cpplint one was not working?
* Added gawk handler test.
* added warning to gawk handler.
* added gawk command callback test
* added comment about --source
* added back optional commandline option
