[verona.stage] RFR 8087203: Add support for PATCH field and remove unused fields of new version string

[Alejandro E Murillo]

Please review these changes:

Bug:  https://bugs.openjdk.java.net/browse/JDK-8087202
Webrev: http://cr.openjdk.java.net/~amurillo/9/8087202

These are intended to:

(1)  Add support for the patch field of the new version string format
(2) Remove unused fields remaining from the old version string format
(3) Patch some jaxp initialization code to be able to handle the new 
version string.
       this will be pushed under a different bug number, but is required
       to be able to run and pass all the tests associated with 
"-testset hotspot"
       (for JFR tests the VM can't be started without that).
      These will be pushed under this sub-task: 
https://bugs.openjdk.java.net/browse/JDK-8098588

(4) Additional notes:
(a) Some pieces of code, only necessary for 1.5 or older,  were removed
(b) update_version and special_update_version were removed
(c) The code to parse the version string in 
jdk/test/sun/misc/Version/Version.java
       will probably change when the Version.java class is available.
(d) As with the changes for 8085822, this is all being pushed to [1] and 
then later to jdk9/dev
(e) These changes should address most, if not all, of the issues raised 
during
the code review for JDK-8085822 (see also 
https://bugs.openjdk.java.net/browse/JDK-8087203)
(f) All  builds and tests pass for "-testset hotspot".

[1] http://hg.openjdk.java.net/verona/stage

Thanks

-- 
Alejandro