hdf5_msb

[svn-r14850] Purpose: Fixed bugs

Description:
    - Revised Attribute::write and Attribute::read wrappers to handle
    memory allocation/deallocation properly. (bugzilla 1045)
    - Changed free() to H5Dfree(), also needed H5private.h
    - Corrected quite a few typos in documenting!

Platforms tested:
    SunOS 5.10 (linew)
    Linux 2.6 (kagiso)
    FreeBSD (duty) - there was something wrong in the C tests for makecheck
        hung quite a long time; I went ahead with makecheck just in c++ dir,
        since the changes didn't effect the C tests.  I'll keep an eye on
        the tests tonight...