Patches by Piers Lauder.

Patches by Piers Lauder.

Reasons for patches:

1st patch (15,21):
	version change

2nd patch (66,72):
	This is a patch I found in a Zope product release (quite by accident!).
	It relaxes the conditions for matching a literal. I've looked over the
	logic, and tested it, and it seems sensible.

3rd patch (117,123):
	It appears the quoting matcher was too general, and that the IMAP4
	protocol requires characters like ':' in commands to be unquoted.
	(This is the patch already sent to Guido.)

4th patch (699,705):
	Spelling correction in comment.

5th patch (753,761):
	Another patch from the Zope product. It seems that some IMAP4 servers
	produce unexpected responses in the middle of valid command/response
	sequences. This patch ignores the unexpected responses in this
	situation. (How I wish users would send me bug reports with examples!).

last 2 patches: (1015,1028) (1038,1044):
	Minor improvements to test code.