Restrict a file name to naming convention for OCaml modules

External tools will be called for the transformation of an OCaml source file into an executable program. The corresponding file name was treated in a way that the used parameter could be split into separate parts if [it contained special characters like spaces](https://github.com/coccinelle/coccinelle/issues/5 "Check handling of special characters?").

A name split could result in unwanted consequences.
* Different files would be referenced.
* The files would not be found with shorter names.

This situation can be improved in the way that a specific identifier which will fit to the naming convention for OCaml modules will be generated.