[7u4] Request for approval for bulk integration of hs23-b07

[John Coomes]

Requesting approval to integrate hs23-b07 into jdk7u4-b03.

A webrev is available at:

http://cr.openjdk.java.net/~jcoomes/7u4/hs23-b07-jdk7u4-b03.webrev/

Pre-integration testing is in progress; the integration will proceed
only after SQE has analyzed the results and approved.

The fixes in the proposed integration are below.  All have undergone
nightly testing and are already in a jdk8 repository.

6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
7097002: G1: remove a lot of unused / redundant code from the G1CollectorPolicy class
7106024: CMS: Removed unused code for precleaning in remark phase
7110017: is_headless_jre should be updated to reflect the new location of awt toolkit libraries
7110173: GCNotifier::pushNotification publishes stale data.
7110718: -XX:MarkSweepAlwaysCompactCount=0 crashes the JVM
7111795: G1: Various cleanups identified during walk through of changes for 6484965
7112308: Fix Visual Studio build for precompiled header
7112743: G1: Reduce overhead of marking closure during evacuation pauses
7112997: Remove obsolete code ResetObjectsClosure and VerifyUpdateClosure
7113503: Bump the hs23 build number to 07
7114303: G1: assert(_g1->mark_in_progress()) failed: shouldn't be here otherwise
7116189: Export JVM_SetNativeThreadName from Hotspot
7116481: Commercial features in Hotspot must be gated by a switch
7116730: Revert 7116481: Commercial features in Hotspot must be gated by a switch

-John