Make contrib to not to fail downloading live555.

This changes filename from "latest" to explicit versioned name.
As official site doesn't provide old tarballs, we use
http://code.google.com/p/live555sourcecontrol/downloads instead.

Note: when updating contrib to new version, need to get checksum from
official site, not from there! Just in case...
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

contrib/src/live555/SHA512SUMS

-94feb3490ab24e308c8b266e8853421c22e2e823f0452e2aad253bb6a8a22b81c9904e5fd06748a93bbb4380fa328bdc7549d5aa477c94fa90c8fee09e7ccd9e  live555-latest.tar.gz
+62efb3f5b0797fc9a6c77416f720da6d54b24350fdf4774ea4c32a3d7e4c6548345e6e0ba5ed81bb02edbc28eece10338e62aab2df85436b3d8fd0d407c49b3a  live.2011.07.08.tar.gz

contrib/src/live555/rules.mak

 # live555
 
-LIVEDOTCOM_URL := http://live555.com/liveMedia/public/live555-latest.tar.gz
+#LIVEDOTCOM_URL := http://live555.com/liveMedia/public/live555-latest.tar.gz
+LIVE555_FILE := live.2011.07.08.tar.gz
+LIVEDOTCOM_URL := http://live555sourcecontrol.googlecode.com/files/$(LIVE555_FILE)
 
 PKGS += live555
 
-$(TARBALLS)/live555-latest.tar.gz:
+$(TARBALLS)/$(LIVE555_FILE):
 	$(call download,$(LIVEDOTCOM_URL))
 
-.sum-live555: live555-latest.tar.gz
+.sum-live555: $(LIVE555_FILE)
 
-live555: live555-latest.tar.gz .sum-live555
+live555: $(LIVE555_FILE) .sum-live555
 	$(UNPACK)
 	patch -p0 < $(SRC)/live555/live-uselocale.patch
 	patch -p0 < $(SRC)/live555/live-inet_ntop.patch