hdf5_msb

[svn-r12138] Purpose: VMS port

Description: Unix remove function removes only the latest version of a file
             on VMS. Some of our tests create multiple versions of the testfiles
             and as a result, test programs may be confused, give false negative result,
             etc.

Solution: Created HDremove_all function for VMS that removes all versions of the files.
          HDremove on VMS is an alias to HDremove_all.

Platforms tested: VMS server and heping (to check that nothing is borken on UNIX side)

Misc. update: