Fix building with jdk9

OBS-URL: https://build.opensuse.org/package/show/Java:packages/slf4j?expand=0&rev=25

build.xml.tar.bz2

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:8c2fc6bfc4c8c259350c803ff6b978dfb0b13c56af96b6e69e1c49f692bf1996
-size 317440
+oid sha256:d028e763f0f348c984cee358c16bfea455789f3afe7b31df72a2e963cc44302f
+size 9483

slf4j.changes

@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Sun Sep 10 13:38:22 UTC 2017 - fstrba@suse.com
+
+- Specify java source and target levels 1.6 in order to allow
+  building with jdk9
+- Disable doclint to avoid bailing out on formatting errors
+- Recompress the build.xml.tar.bz2, so that it is a real tar.bz2 
+
 -------------------------------------------------------------------
 Fri May 19 16:49:25 UTC 2017 - tchvatal@suse.com
 

slf4j.spec

@@ -73,7 +73,7 @@ Manual for %{name}.
 
 %prep
 %setup -q
-tar xf %{SOURCE1}
+tar xjf %{SOURCE1}
 %patch1 -p1
 find . -name "*.jar" | xargs rm