hg: amber/amber/jdk: improve exposition, fix typos

[john.r.rose at oracle.com]

Changeset: ed213d48b9d7
Author:    jrose
Date:      2017-06-24 15:59 -0700
URL:       http://hg.openjdk.java.net/amber/amber/jdk/rev/ed213d48b9d7

improve exposition, fix typos

! src/java.base/share/classes/java/lang/invoke/BootstrapCallInfo.java
! src/java.base/share/classes/java/lang/invoke/BootstrapMethodInvoker.java
! src/java.base/share/classes/java/lang/invoke/ConstantGroup.java
! src/java.base/share/classes/java/lang/invoke/MethodHandle.java
! src/java.base/share/classes/java/lang/invoke/package-info.java