Create compat symlink also for bind-devel includes

Try to preserve original _includedir/bind9 directory. Replace it with
alternatives symlink leading to version explicit includes.

bind.spec

@@ -300,6 +300,8 @@ Obsoletes: %{name}-lite-devel < 32:9.16.6-3
 Requires: %{name}-libs%{?_isa} = %{epoch}:%{version}-%{release}
 Requires: openssl-devel%{?_isa} libxml2-devel%{?_isa}
 Requires: libcap-devel%{?_isa}
+Requires(post):   %{_bindir}/alternatives
+Requires(postun): %{_bindir}/alternatives
 %upname_compat %{upname}-devel
 %if %{with GSSTSIG}
 Requires: krb5-devel%{?_isa}
@@ -705,6 +707,7 @@ mkdir -p ${RPM_BUILD_ROOT}%{_tmpfilesdir}
 install -p -m 644 %{SOURCE35} ${RPM_BUILD_ROOT}%{_tmpfilesdir}/%{name}.conf
 install -p -m 644 %{SOURCE51} ${RPM_BUILD_ROOT}%{_tmpfilesdir}/%{name}-chroot.conf
 
+mkdir -p ${RPM_BUILD_ROOT}%{_includedir}/bind9
 
 %if %{with DNSTAP}
   %global utils_bin1_dnstap  dnstap-read
@@ -975,6 +978,19 @@ if [ -x %{_sbindir}/selinuxenabled ] && [ -x %{_sbindir}/getsebool ] && [ -x %{_
   fi
 fi
 
+%post devel
+%if "%{program_suffix}" != ""
+  alternatives --install %{_includedir}/bind9 %{upname}-includedir %{_includedir}/bind-%{mver} %{alternatives_prio}
+%endif
+
+%postun devel
+%if "%{program_suffix}" != ""
+if [ $1 -eq 0 ] ; then
+  alternatives --remove %{upname}-includedir %{_includedir}/bind9
+fi
+%endif
+%end
+
 %ldconfig_scriptlets libs
 
 %post chroot
@@ -1175,6 +1191,7 @@ fi;
 %{_libdir}/libisc-%{mver}.so
 %{_libdir}/libisccfg-%{mver}.so
 %{_libdir}/libirs-%{mver}.so
+%ghost %{_includedir}/bind9
 %dir %{bind_include}
 %{bind_include}/isccc
 %{bind_include}/ns