[MOVED FROM BAD] removal of //-style comments don't link plugins to core libs -- the versioning is done internally to the plugins with...

Original commit message from CVS:
* removal of //-style comments
* don't link plugins to core libs -- the versioning is done internally to the plugins with the plugin_info struct,
and symbol resolution is lazy, so we can always know if a plugin can be loaded by the plugin_info data. in theory.