[boost] Spirit V1.8.4 released

Hi all, We just released Spirit V1.8.4. The files are available on the Sourceforge Spirit project page: https://sourceforge.net/project/showfiles.php?group_id=28447&release_id=4593 93. This is mainly a bugfix release, here are the highlights: Spirit Change Log, 1.8.4 * Fixed no_actions bug where no_action is applied recursively. * Fixed the regex_p parser for Boost >= V1.33.0 * Implemented a workaround for namespace issues VC++ has with Spirit's file_iterators * Fixed bug in tree match policies that prevented using gen_pt/ast_node_d, reported by Jascha Wetzel. * Made position_iterator usable with wchar_t based strings. Regards Hartmut