specfile: create (and own) the conf.d/ directory (for RHEL only)

ghostscript.spec

@@ -285,9 +285,18 @@ autoreconf -fv
 #     ... according to upstream, strict aliasing optimization (enabled by
 #         default with -O2 option) still causes parts of Ghostscript to
 #         malfunction, so we need to disable this optimization technique
+#
+# NOTE:   In RHEL we need to keep the /usr/share/ghostscript/conf.d/ folder
+#         for China's GB18030 official certification:
+%if %{defined rhel} || %{defined centos}
+%configure --enable-dynamic --disable-compile-inits --without-versioned-path \
+           --with-fontpath="%{urw_base35_fontpath}:%{google_droid_fontpath}:%{_datadir}/%{name}/conf.d/" \
+           CFLAGS="${CFLAGS} -fno-strict-aliasing"
+%else
 %configure --enable-dynamic --disable-compile-inits --without-versioned-path \
            --with-fontpath="%{urw_base35_fontpath}:%{google_droid_fontpath}" \
            CFLAGS="${CFLAGS} -fno-strict-aliasing"
+%endif
 
 %make_build so
 
@@ -344,6 +353,11 @@ for file in $(basename --multiple %{buildroot}%{_datadir}/%{name}/Resource/CMap/
   find %{adobe_mappings_rootpath} -type f -name ${file} -exec ln -fs {} %{buildroot}%{_datadir}/%{name}/Resource/CMap/${file} \;
 done
 
+# Create the configuration folder fo RHEL:
+%if %{defined rhel} || %{defined centos}
+  install -m 0755 -d %{buildroot}%{_datadir}/%{name}/conf.d/
+%endif
+
 # === INSTALLATION INSTRUCTIONS ===============================================
 
 %post   -n libgs -p /sbin/ldconfig
@@ -360,6 +374,11 @@ done
 %{_libdir}/libgs.so.*
 %{_datadir}/%{name}/
 
+# Include the configuration folder for RHEL:
+%if %{defined rhel} || %{defined centos}
+  %dir %{_datadir}/%{name}/conf.d/
+%endif
+
 # ---------------
 
 %files -n libgs-devel