RFR (M): GRAAL-246: intrinsify Reflection.getCallerClass

[Christian Thalinger]

[Now that the CallerSensitive changes have arrived in the jdk8 repository I finally had to time to finish this up.]

http://cr.openjdk.java.net/~twisti/GRAAL-246

GRAAL-246: intrinsify Reflection.getCallerClass

graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotResolvedJavaMethod.java
graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotRuntime.java
graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/ReflectionGetCallerClassNode.java
graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/ReflectionSubstitutions.java
graal/com.oracle.graal.phases/src/com/oracle/graal/phases/GraalOptions.java
src/share/vm/graal/graalCompilerToVM.cpp
src/share/vm/graal/graalJavaAccess.hpp