Add *.so libraries explicitly for clang-devel

We had too many `*.so` libraries added to the `clang-devel` package.

Before we've added these implicitly by accident:

```
/usr/lib64/libLLVM.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/libLTO.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/libRemarks.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/libclang-cpp.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/libclang.so.19.0.0pre20240509.g943617d12ccbd3
/usr/lib64/libclang.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/liblldCOFF.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/liblldCommon.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/liblldELF.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/liblldMachO.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/liblldMinGW.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/liblldWasm.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/libomptarget.rtl.amdgpu.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/libomptarget.rtl.cuda.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/libomptarget.rtl.host.so.19.0pre20240509.g943617d12ccbd3
/usr/lib64/libomptarget.so.19.0pre20240509.g943617d12ccbd3
```

And now we're adding just these because these are the ones that used to
exist within the clang-devel package when it was still being built in
standalone mode:

```
/usr/lib64/libclang-cpp.so
/usr/lib64/libclang.so
```

files.spec.inc

@@ -342,7 +342,8 @@
 
 %files -n %{pkg_name_clang}-devel
 %license clang/LICENSE.TXT
-%{install_libdir}/*.so
+%{install_libdir}/libclang-cpp.so
+%{install_libdir}/libclang.so
 %{install_includedir}/clang/
 %{install_includedir}/clang-c/
 %{install_libdir}/cmake/*