hg: jdk/client: 8182610: Update specification of service providers for IIORegistry and ServiceRegistry

[philip.race at oracle.com]

Changeset: 40afd72303e9
Author:    prr
Date:      2017-12-04 09:38 -0800
URL:       http://hg.openjdk.java.net/jdk/client/rev/40afd72303e9

8182610: Update specification of service providers for IIORegistry and ServiceRegistry
Reviewed-by: serb, psandoz

! src/java.desktop/share/classes/javax/imageio/spi/IIORegistry.java
! src/java.desktop/share/classes/javax/imageio/spi/ServiceRegistry.java