rrdtool-automake-compat.patch (buildroot)
* Corrects using of automake macros.

rrdtool-configure-cross-compiling.patch (kristov)
* Prevents libxml2 installed on the host to be preferred over the one
  installed into the staging area.

rrdtool-no-build-date.patch (kristov)
* Prevents the build date/time from being compiled in.

rrdtool-no-gettext.patch (kristov)
* Disables the translation of .po files, as this does not work.

