Restore DWARF 4 config file for Fedora 38

This is a port of 74b8bb0397

clang.cfg

@@ -0,0 +1,3 @@
+# Drop the following option after debugedit adds support to DWARF-5:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=28728
+-gdwarf-4

files.spec.inc

@@ -126,6 +126,9 @@
 %files -n %{pkg_name_clang}-libs
 %{install_prefix}/lib/clang/%{maj_ver}/include/*
 %{install_libdir}/*.so.*
+%if 0%{?fedora} == 38
+%{_sysconfdir}/%{name}/%{_target_platform}.cfg
+%endif
 
 %files -n %{pkg_name_clang}-devel
 %if %{without compat_build}

sources.spec.inc

@@ -10,6 +10,8 @@ Source1006:	release-keys.asc
 Source2005:	macros.%{pkg_name_clang}
 %endif
 
+Source2006: clang.cfg
+
 # Sources we use to split up the main spec file in sections so that we can more
 # easily see what specfile sections are touched by a patch.
 Source1000: version.spec.inc