hg: jdk8/tl/jdk: 8024635: Caching MethodType's descriptor string improves lambda linkage performance

[john.r.rose at oracle.com]

Changeset: adcc01f5bc93
Author:    jrose
Date:      2013-11-02 20:08 -0700
URL:       http://hg.openjdk.java.net/jdk8/tl/jdk/rev/adcc01f5bc93

8024635: Caching MethodType's descriptor string improves lambda linkage performance
Summary: Better interpreted and compiled performance of operations in MethodType important to LambdaMetafactory.
Reviewed-by: jrose, twisti, mchung
Contributed-by: sergey.kuksenko at oracle.com

! src/share/classes/java/lang/invoke/MethodType.java