Add host-libevent-2.0.22-stable.tar.gz; add symlink to it.

Change-Id: Ife14f2379d80a0c7dbbd5e29be6e7f0398d17851
diff --git a/libevent-2.0.22-stable.tar.gz b/host-libevent-2.0.22-stable.tar.gz
similarity index 100%
rename from libevent-2.0.22-stable.tar.gz
rename to host-libevent-2.0.22-stable.tar.gz
Binary files differ
diff --git a/libevent-2.0.22-stable.tar.gz b/libevent-2.0.22-stable.tar.gz
new file mode 120000
index 0000000..d086550
--- /dev/null
+++ b/libevent-2.0.22-stable.tar.gz
@@ -0,0 +1 @@
+host-libevent-2.0.22-stable.tar.gz
\ No newline at end of file