6953144: Tiered compilation
Summary: Infrastructure for tiered compilation support (interpreter + c1 + c2) for 32 and 64 bit. Simple tiered policy implementation.
Reviewed-by: kvn, never, phh, twisti
-export:JNI_GetDefaultJavaVMInitArgs
-export:JNI_CreateJavaVM
-export:JNI_GetCreatedJavaVMs
-export:jio_snprintf
-export:jio_printf
-export:jio_fprintf
-export:jio_vfprintf
-export:jio_vsnprintf