Converted all package.html files to package-info.java for easier package documentation.
diff --git a/utils/misc/src/main/java/org/onlab/util/package-info.java b/utils/misc/src/main/java/org/onlab/util/package-info.java
new file mode 100644
index 0000000..7d7dcdb
--- /dev/null
+++ b/utils/misc/src/main/java/org/onlab/util/package-info.java
@@ -0,0 +1,4 @@
+/**
+ * Miscellaneous domain-agnostic utilities.
+ */
+package org.onlab.util;