Address doc comment rot in the standard library.

- Match @param/@tparam names to the actual parameter name
- Use @tparam for type parameters
- Whitespace is required between `*` and `@`
- Fix incorrect references to @define macros.
- Use of monospace `` and {{{}}} (much more needed)
- Remove `@param p1 ...` stubs, which appear in the generated docss.
  - But, retainsed `@param p1` stubs, assuming they will be filtered from
    the generated docs by SI-5795.
- Avoid use of the shorthand `@param   doc for the solitary param`
  (which works, but isn't recognized by the code inspection in IntelliJ
  I used to sweep through the problems)

The remaining warnings from `ant docs` seem spurious, I suspect they are
an unintended consequence of documenting extension methods.

  [scaladoc] /Users/jason/code/scala/src/library/scala/collection/TraversableOnce.scala:181: warning: Variable coll undefined in comment for method reduceOption in class Tuple2Zipped
  [scaladoc]   def reduceOption[A1 >: A](op: (A1, A1) => A1): Option[A1] = reduceLeftOption(op)
  [scaladoc]       ^

1 files changed, 6 insertions, 6 deletions

diff --git a/src/library/scala/collection/convert/WrapAsScala.scala b/src/library/scala/collection/convert/WrapAsScala.scala
index 14c64695ff..49f4d7cd99 100644
--- a/src/library/scala/collection/convert/WrapAsScala.scala
+++ b/src/library/scala/collection/convert/WrapAsScala.scala
@@ -25,8 +25,8 @@ trait WrapAsScala {
    * explicit call of `asIterator(scala.collection.Iterator)` then the
    * original Scala `Iterator` will be returned.
    *
-   * @param i The `Iterator` to be converted.
-   * @return A Scala `Iterator` view of the argument.
+   * @param it The `Iterator` to be converted.
+   * @return   A Scala `Iterator` view of the argument.
    */
   implicit def asScalaIterator[A](it: ju.Iterator[A]): Iterator[A] = it match {
     case IteratorWrapper(wrapped) => wrapped
@@ -187,8 +187,8 @@ trait WrapAsScala {
    * `Dictionary` and any side-effects of using it via the Scala interface
    * will be visible via the Java interface and vice versa.
    *
-   * @param m The Dictionary to be converted.
-   * @return A Scala mutable Map[String, String] view of the argument.
+   * @param p The Dictionary to be converted.
+   * @return  A Scala mutable Map[String, String] view of the argument.
    */
   implicit def dictionaryAsScalaMap[A, B](p: ju.Dictionary[A, B]): mutable.Map[A, B] = p match {
     case DictionaryWrapper(wrapped) => wrapped
@@ -202,8 +202,8 @@ trait WrapAsScala {
    * `Properties` and any side-effects of using it via the Scala interface
    * will be visible via the Java interface and vice versa.
    *
-   * @param m The Properties to be converted.
-   * @return A Scala mutable Map[String, String] view of the argument.
+   * @param p The Properties to be converted.
+   * @return  A Scala mutable Map[String, String] view of the argument.
    */
   implicit def propertiesAsScalaMap(p: ju.Properties): mutable.Map[String, String] = p match {
     case _ => new JPropertiesWrapper(p)