RFR: 8263323: Debug Agent help output includes invalid URL

[Chris Plummer]

Rather than embed a URL in the help output, which needs to be updated if the location of docs ever changes, just include a description of the document so it can be looked up. The output now looks like:


$ ./java -agentlib:jdwp=help
               Java Debugger JDWP Agent Library
               --------------------------------

  (See the "Oracle VM Invocation Options" section of the JPDA
   "Connection and Invocation Details" document for more information.)

jdwp usage: java -agentlib:jdwp=[help]|[<option>=<value>, ...]

Option Name and Value            Description                       Default
---------------------            -----------                       -------
suspend=y|n                      wait on startup?                  y
transport=<name>                 transport spec                    none
...

-------------

Commit messages:
 - Replace broken URL in help output with name of help document

Changes: https://git.openjdk.java.net/jdk/pull/4352/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4352&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263323
  Stats: 3 lines in 1 file changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4352.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4352/head:pull/4352

PR: https://git.openjdk.java.net/jdk/pull/4352