This CR is simply to cleanup the style of the java.net.HttpCookie source code.
 1) Remove extraneous newlines
 2) Use consistent javadoc comment style
 3) Fix typos in public specification, specifically:
    http->HTTP, url->URL, seperated->separated, llegal->illegal
 4) Where possible limit code to 80 columns

Minor implementation changes
 1) Make 'name', 'assignors', and 'whenCreated', final since they are immutable
 2) Remove unnecessary StringBuilder from toNetscapeHeaderString
    ( since it is using String concatenation )
 3) Use diamond in ArrayList construction, parse()