* plugin.h (plugin_active_plugins_p): New prototype.

	* plugin.h (plugin_active_plugins_p): New prototype.
	(is_ir_dummy_bfd): Delete prototype.
	* plugin.c: Fix formatting issues.
	(is_ir_dummy_bfd): Make static.
	(plugin_active_plugins_p): New function.
	* ldfile.c (ldfile_try_open_bfd): Use it to save work if no plugins
	are loaded.  Always close file descriptor after claim handler returns.
	* ldmain.c (add_archive_element): Likewise.