hg: jdk/hs: 8191924: Adjust DelegatingClassLoader's metadata space sizing algorithm

[zgu at redhat.com]

Changeset: c382614abe59
Author:    zgu
Date:      2018-03-13 16:21 -0400
URL:       http://hg.openjdk.java.net/jdk/hs/rev/c382614abe59

8191924: Adjust DelegatingClassLoader's metadata space sizing algorithm
Summary: Reduce memory usage for delegating class loader's metadata by adjusting sizing alogrithm
Reviewed-by: adinn, stuefe, coleenp

! src/hotspot/share/memory/metaspace.cpp