Update to 8.0.121

Changelog:
## New features
security-libs/javax.xml.crypto
Added security property to configure XML Signature secure validation mode

core-libs/java.io:serialization
Serialization Filter Configuration

core-libs/java.rmi
RMI Better constraint checking

security-libs
Add mechanism to allow non-default root CAs to not be subject to algorithm restrictions

## Changes
security-libs/javax.net.ssl
Make 3DES as a legacy algorithm in the JSSE provider

security-libs/javax.net.ssl
Improve the default strength of EC in JDK

tools/javadoc(tool)
New --allow-script-in-comments option for javadoc

security-libs/javax.xml.crypto
Increase the minimum key length to 1024 for XML Signatures

docs/release_notes
Restrict certificates with DSA keys less than 1024 bits.

security-libs
More checks added to DER encoding parsing code

core-libs/java.net
Additional access restrictions for URLClassLoader.newInstance

core-libs/java.util.logging
A new configurable property in logging.properties java.util.logging.FileHandler.maxLocks

## Bug Fixes
client-libs/javax.swing
Trackpad scrolling of text on OS X 10.12 Sierra is very fast

(ryoon)