Contribs: update libass to 0.10.1

(cherry picked from commit 826ec51f9d71813ceb1447d071c848b2ae467d9f)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

contrib/src/ass/SHA512SUMS

-bd21f2c5df9c7f8729db01d77f306ffc730e71fa085410c89b9e3c5a383c957a3266422aa76737acefb5523f159bd71a8e35343f74321708117a46d146bc7c8b  libass-0.10.0.tar.gz
+531b48a173f4d7bc50ea443ff71c8fe5c1287e8563c44a5dbf72b0a9e5fb16570fe2285ad2bac8ccdada6e6d195b4f451b1036dca17f2aa6de5803e8946cb9a3  libass-0.10.1.tar.gz

contrib/src/ass/rules.mak

 # ASS
-ASS_VERSION := 0.10.0
+ASS_VERSION := 0.10.1
 ASS_URL := http://libass.googlecode.com/files/libass-$(ASS_VERSION).tar.gz
 
 PKGS += ass