Fix PORTAGE_RSYNC_RETRIES functionality so it works according to the
documentation in 'man make.conf'.

--- a/pym/portage/sync/modules/rsync/rsync.py
+++ b/pym/portage/sync/modules/rsync/rsync.py
@@ -144,6 +144,7 @@ class RsyncSync(NewBase):
 
 		addrinfos = None
 		uris = []
+		uris_save = []
 
 		try:
 			addrinfos = getaddrinfo_validate(
@@ -203,10 +204,17 @@ class RsyncSync(NewBase):
 		while (1):
 			if uris:
 				dosyncuri = uris.pop()
+				uris_save.append(dosyncuri)
 			else:
-				writemsg("!!! Exhausted addresses for %s\n"
-					% _unicode_decode(hostname), noiselevel=-1)
-				return (1, False)
+				if maxretries < 0 or retries > maxretries:
+					writemsg("!!! Exhausted addresses for %s\n"
+						% _unicode_decode(hostname), noiselevel=-1)
+					return (1, False)
+				else:
+					uris_save.reverse()
+					uris = uris_save
+					dosyncuri = uris_save.pop()
+					uris_save = [dosyncuri]
 
 			if (retries==0):
 				if "--ask" in opts: