Fix tarball URL.

Signed-off-by: Dodji Seketeli <dodji@seketeli.org>

libabigail.spec

@@ -8,14 +8,7 @@ Summary: Set of ABI analysis tools
 
 License: LGPLv3+
 URL: https://sourceware.org/libabigail/
-# This tarball was constructed from pulling the source code of
-# libabigail from its Git repository by doing:
-#    git clone git://sourceware.org/git/libabigail.git
-#    pushd libabigail
-#    autoreconf -i
-#    configure
-#    make dist
-Source0: %{tarball_name}.tar.gz
+Source0: http://mirrors.kernel.org/sourceware/libabigail/%{tarball_name}.tar.gz
 
 BuildRequires: libtool
 BuildRequires: elfutils-devel
@@ -133,6 +126,7 @@ fi
 - Update to upstream 1.0.rc2
 - This fixes an important regression in the handling of binaries
   which debug info have been compressed with dwz.
+- Fix source tarball URL.
 
 * Wed Jan  6 2016 Dodji Seketeli <dodji@seketeli.org> - 1.0-0.rc1.3
 - Run make check in // if possible