Bug 602531  - coverity: op_shared_delete: compare preop entry and GLUE_PARENT_ENTRY before freeing them
    
    https://bugzilla.redhat.com/show_bug.cgi?id=602531
    Resolves: bug 602531
    Bug Description:  coverity: op_shared_delete: compare preop entry and GLUE_PARENT_ENTRY before freeing them
    Reviewed by: nhosoi (Thanks!)
    Branch: HEAD
    Fix Description: Get the pre entry and glue parent entries separately,
    compare them, and only free one of them if they are the same.
    Platforms tested: RHEL5 x86_64
    Flag Day: no
    Doc impact: no