6484959: G1: introduce survivor spaces
6797754: G1: combined bugfix
Summary: Implemented a policy to control G1 survivor space parameters.
Reviewed-by: tonyp, iveresov
-export:JNI_GetDefaultJavaVMInitArgs
-export:JNI_CreateJavaVM
-export:JNI_GetCreatedJavaVMs
-export:jio_snprintf
-export:jio_printf
-export:jio_fprintf
-export:jio_vfprintf
-export:jio_vsnprintf