hg: jdk7/tl/langtools: 6715753: unknown option error can be a little more helpful

[jonathan.gibbons at sun.com]

Changeset: df47f7f4c95a
Author:    jjg
Date:      2008-07-08 17:25 -0700
URL:       http://hg.openjdk.java.net/jdk7/tl/langtools/rev/df47f7f4c95a

6715753: unknown option error can be a little more helpful
Reviewed-by: ksrini

! src/share/classes/com/sun/tools/javap/JavapTask.java
! src/share/classes/com/sun/tools/javap/resources/javap.properties
+ test/tools/javap/T6715753.java