simplify %install a bit

mdds.spec

@@ -45,12 +45,10 @@ sed -i -e '/^CPPFLAGS_NODEBUG=/s/=.*/="%{optflags}"/' configure
 %configure
 
 %install
-mkdir -p %{buildroot}/%{_includedir}
-mkdir %{buildroot}/%{_includedir}/mdds
+install -d -m 0755 %{buildroot}/%{_includedir}/mdds
 cp -pr include/mdds/* %{buildroot}/%{_includedir}/mdds
-mkdir -p %{buildroot}/%{_datadir}
-mkdir %{buildroot}/%{_datadir}/pkgconfig
-cp -p misc/%{name}.pc %{buildroot}/%{_datadir}/pkgconfig
+install -d -m 0755 %{buildroot}/%{_datadir}/pkgconfig
+install -p -m 0644 misc/%{name}.pc %{buildroot}/%{_datadir}/pkgconfig
 
 %check
 make check %{?_smp_mflags}