rrdtool: fix breakage with newer autotools

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/rrdtool/rrdtool-automake-compat.patch

@@ -0,0 +1,18 @@
+Make it compatible with newer autoconf/automake.
+Patch from OpenWRT.
+
+Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
+
+--- a/bindings/tcl/Makefile.am
++++ b/bindings/tcl/Makefile.am
+@@ -26,8 +26,8 @@ tclpkgdir = @TCL_PACKAGE_DIR@
+ tclpkg_DATA = pkgIndex.tcl
+ tclpkg_SCRIPTS = ifOctets.tcl
+ else
+-pkglib_DATA = pkgIndex.tcl
+-pkglib_SCRIPTS = ifOctets.tcl
++pkgdata_DATA = pkgIndex.tcl
++pkgdata_SCRIPTS = ifOctets.tcl
+ endif
+ 
+ # Automake doen't like `tclrrd$(VERSION)$(TCL_SHLIB_SUFFIX)' as