[8u20]: Request for approval for back port of 2 parfait fixes

[Phil Race]

Review thread: 
http://mail.openjdk.java.net/pipermail/2d-dev/2014-May/004581.html

Bug : https://bugs.openjdk.java.net/browse/JDK-8042450 
<https://bugs.openjdk.java.net/browse/JDK-8035623>
Synopsis:

[parfait]: Extra unused entries in ICU ScriptCodes enum

JDK 9 changeset : 
http://hg.openjdk.java.net/jdk9/client/jdk/rev/be332c33c5a0
Identical JDK 8 backport: http://cr.openjdk.java.net/~prr/8042850

Bug:https://bugs.openjdk.java.net/browse/JDK-8042455  <https://bugs.openjdk.java.net/browse/JDK-8035623>
Synopsis : [parfait] Potential null pointer dereference in IndicLayoutEngine.cpp
JDK 9 changeset:http://hg.openjdk.java.net/jdk9/client/jdk/rev/006f772bbc7e
Identical JDK 8 backport:http://cr.openjdk.java.net/~prr/8042855


-Phil