[8u60] Request for approval for bulk integration of hs25.60-b19

[Alejandro E Murillo]

Requesting approval to integrate hs25.60-b19 into jdk8u60-b19.

A webrev is available at:

http://cr.openjdk.java.net/~amurillo/8u60/hs25.60-b19-jdk8u60-b19.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 jdk9 repository.

8036851: volatile double accesses are not explicitly atomic in C2
8051712: regression Test7107135 crashes
8068945: Use RBP register as proper frame pointer in JIT compiled code on x86
8075798: Allow ADLC register class to depend on runtime conditions also for cisc-spillable classes
8077504: Unsafe load can loose control dependency and cause crash
8080281: 8068945 changes break building the zero JVM variant
8081436: new hotspot build - hs25.60-b19
8081475: SystemTap does not work when JDK is compiled with GCC 5
8081693: metaspace/shrink_grow/CompressedClassSpaceSize fails with OOM: Compressed class space

-- 
Alejandro