2006-08-03 [wwp] 2.4.0cvs21

2006-08-03 [wwp]	2.4.0cvs21

	* src/filtering.c
	* src/filtering.h
	* src/prefs_common.c
	* src/summaryview.c
	* src/alertpanel.c
	* src/alertpanel.h
	* src/messageview.c
		ask what to do w/ filtering rules that belong to an account when
		applying filtering rules manually from the main window (skip,
		apply regardless of the account, use current account). This dialog
		can be skipped and the last reply used.