2004-07-13 [colin] 0.9.12cvs18.3

2004-07-13 [colin]	0.9.12cvs18.3

	* src/pop.c
	* src/pop.h
	* src/messageview.c
		Refactor API (to avoid passing 5+ params and code
		duplication)
	* src/folder.c
	* src/msgcache.c
	* src/procheader.c
	* src/common/defs.h
		Add planned_download to cache
		Don't mess uidl file when moving partially downloaded
		mails (they change folder, we should change it in the
		uidl list too or we'll remove an incorrect message)
		(this also helps removing hacks when changing
		 planned_download in messageview.c)