519262: add composite update site for 3.25

Change-Id: I84835011a458eaa6852f32ef5eff79db5af166d3
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=519262
diff --git a/org.eclipse.mylyn-downloads/snapshots/3.25/composite.index b/org.eclipse.mylyn-downloads/snapshots/3.25/composite.index
new file mode 100644
index 0000000..0745439
--- /dev/null
+++ b/org.eclipse.mylyn-downloads/snapshots/3.25/composite.index
@@ -0,0 +1,3 @@
+DIRS=$(find ../../drops/3.25.*/ -mindepth 1 -maxdepth 1 -type d | sort -r | head -n 10)
+DIRS+=" ../../docs/releases/3.0"
+NAME="Mylyn 3.25 Snapshots for Eclipse 4.7 and 4.8"