[RFR] [8u] 8u252-b09

[Andrew John Hughes]

Here are the jdk8u252-b09 changes (the security patches) for the jdk8u
repository:

Webrevs: https://cr.openjdk.java.net/~andrew/openjdk8/8u252/

Changes in jdk8u252-b09:
  - S8204152: SignedObject throws NullPointerException for null keys
with an initialized Signature object
  - S8219597: (bf) Heap buffer state changes could provoke unexpected
exceptions
  - S8223898: Forward references to Nashorn
  - S8223904: Improve Nashorn matching
  - S8224541: Better mapping of serial ENUMs
  - S8224549: Less Blocking Array Queues
  - S8225603: Enhancement for big integers
  - S8227542: Manifest improved jar headers
  - S8231415: Better signatures in XML
  - S8233250: Better X11 rendering
  - S8233410: Better Build Scripting
  - S8234027: Better JCEKS key support
  - S8234408: Improve TLS session handling
  - S8234825: Better Headings for HTTP Servers
  - S8234841: Enhance buffering of byte buffers
  - S8235274: Enhance typing of methods
  - S8236201: Better Scanner conversions
  - S8238960: linux-i586 builds are inconsistent as the newly build jdk
is not able to reserve enough space for object heap

Successfully built on x86, x86_64, s390, s390x, ppc, ppc64,
ppc64le & aarch64.

Ok to push?
-- 
Andrew :)

Senior Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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