Log Message:
Set JDK_MICRO_VERSION so that the update number is reflected in version
output, going from this:

  openjdk version "1.7.0-internal"

to this:

  openjdk version "1.7.0_80-internal"

This matches the behaviour of sun-jre, and fixes software such as Logstash
and Jira which expect it to be included.  Bump PKGREVISION.