RFR: 8181825: Add tool and services information to module summary

[Mandy Chung]

> On Jun 15, 2017, at 2:05 PM, Jonathan Gibbons <jonathan.gibbons at oracle.com> wrote:
> 
> Updated patch incorporating review feedback.
> 
> * Mandy and Paul's suggestion to use "only" instead of "just".
> * Removed entities for trademark symbols, as being against current guidelines.
> 
> -- Jon
> 
> JBS: https://bugs.openjdk.java.net/browse/JDK-8181825
> Webrev: http://cr.openjdk.java.net/~jjg/8181825/webrev.01


langtools/src/jdk.compiler/share/classes/module-info.java
  s/jar file/JAR file/

Otherwise, looks fine.

Mandy