Git bundle with few fixes for misra check

[Peeter Vois]

Hi, I have made few fixes for misra rules checking. The bundle is attached. Feedback about the changes is welcome.

commit 4a6c7f34c0d23e2fa72f67d18f3c60bc5a56253d
Date: Mon Dec 17 17:54:31 2018 +0200

fix: misra_5_1 found external identifier from the same file but
different scope.

commit e65d25aaafc73bb5cdabdc48582ff85e35415592
Date: Thu Dec 13 16:20:06 2018 +0200

fix: addon misra: misra-c2012-20.4 check also uppercase letters.

[Daniel Marjamäki]

Thanks! I wonder if you could create a github pull request instead? Then we can use the github interface for review comments etc..