* plugins/symbol-db/plugin.c (do_add_new_files),
	(do_import_system_src_after_abort), (on_scan_end_manager):
	* plugins/symbol-db/symbol-db-engine-core.c
	(symbol_db_engine_update_project_symbols),
	(symbol_db_engine_update_buffer_symbols):
	Don't let buffer-updating files which are not in current project.

	* plugins/symbol-db/symbol-db-engine-core.h:
	* plugins/symbol-db/symbol-db-engine-iterator-node.c
	(symbol_db_engine_iterator_node_get_symbol_extra_string):
	* plugins/symbol-db/symbol-db-engine-iterator-node.h:
	* plugins/symbol-db/symbol-db-engine-iterator.h:
	* plugins/symbol-db/symbol-db-engine-priv.h:
	* plugins/symbol-db/symbol-db-engine.h:
	some minor headers fixes. 

svn path=/trunk/; revision=4480