Exclude embedded TinyXML library from doc generation.
Revert clever setting of version number in dune.module

dunecontrol will read the dune.module file first, before calling any
configuration files; thus it cannot be initialized from the script
but the version numbers must be hardcoded here and updated manually.
Allow to build without deprecation warnings in dunecontrol

dunecontrol should be passed the option
--configure-opts="--enable-fieldvector-size-is-method" if you want to
rebuild it from scratch without bazillion strange deprecation warnings,
this flag allows us to participate in that dance.