To clear the file consistency flags field in the
superblock of the file specified in the command line.
With the implementation of file locking, the library uses the
file consistency flags field in the superblock to mark a
file as in writing or SWMR writing mode when a file is opened.
The library will clear this field when the file closes.
However, a situation may occur where an open file is closed
without going through the normal library file closing procedure,
and this field will not be cleared as a result. An example would
be if an application program crashed. This situation will prevent
a user from opening the file. The h5clear tool will
clear the file consistency flags field, and the user can
then open the file.