Ruslan Ermilov f3bef032de Do not output extra comma before "and" for references with two authors.
Example:
	.Rs
	.%A Author1
	.%A Author2
	.%B Book
	.Re

Produced:
	Author1, and Author2, Book.

Now produces:
	Author1 and Author2, Book.

Ported from:	mdocNG
2001-02-19 11:58:15 +00:00
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