Reviewed-by: sherman

6979526: (file) java/nio/file/FileStore/Basic.java fails if the same file system is mounted more than once
Reviewed-by: kevinw, forax

Reviewed-by: ohair

Reviewed-by: kevinw, forax

Summary: Release the registry key handle if ProxyEnable is 0
Reviewed-by: michaelm

Reviewed-by: xuelei

Reviewed-by: chegar

Reviewed-by: chegar

Reviewed-by: darcy, alanb