vchoi_fork

[svn-r4604] 
Purpose:
    Fixing found bug
Description:
    A data file cannot be removed because the corresponding H5File object
    is still in existence, which means the data file is still opened.
Solution:
    Moved h5_cleanup to outside of the try block so that the H5File object
    will go out of scope and be destroyed before h5_cleanup attempts to
    remove the corresponding data file.
Platforms tested:
    SunOS 5.7 (arabica)
    Windows 98