[Rpm-maint] [rpm-software-management/rpm] Ocaml dependency generators running on all ELF files (#1173)

[Panu Matilainen]

While looking at dependency generation performance, noticed that PR #1070 causes OCaml dependency generators to execute on *all* ELF files it ever encounters, because of this:

```
+%__ocaml_magic         ^(ELF|Objective caml|OCaml) .*$
+%__ocaml_path          .(cma|cmi|cmo|cmx|cmxa|cmxs)$
```

What makes it particularly bad is that this is shipped with rpm-build itself, so it affects *everything*.
For example eg kernel dependency generation to take 50+ seconds on my laptop when previously it was some 30+ seconds. We need to be more selective here, one way or the other. 

The current rule matches *either* magic or path as OCaml files, but was the intention to match only if both match? @olafhering , @rwmjones ?

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