OPENLAU Open a McStas Laue HKL file
display it and set the 'ans' variable to an iData object with its content
such files can be obtained from Crystallographica and ICSD <icsd.ill.fr>
(c) E.Farhi, ILL. License: EUPL.
CROSS-REFERENCE INFORMATION
This function calls:
openlaz OPENLAZ Open a McStas Lazy HKL Powder file