NSEdoc cleanup

Mostly splitting function summaries (the first paragraph of NSEdoc) from
the body of the description to make the summary indexes shorter and
easier to scan.

Also fixed some unbalanced code tags like <code>foo</table>

nselib/jdwp.lua

@@ -586,6 +586,7 @@ function invokeStaticMethod(socket,id,classID,methodID,numberOfArguments,argumen
 end
 
 --- NewInstance Command (4)
+--
 --  Creates a new object of this type, invoking the specified constructor.
 --  The constructor method ID must be a member of the class type.
 --