prbs_a() and noisegen() should be moved to elementary_functions/Matrix generation
Reported by Samuel GOUGEON (@sgougeon)
BUG DESCRIPTION:
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prbs_a() should be moved to elementary_functions/Matrix generation.
Indeed, it's a 2-state random generator that can be useful in multiple fields.
It is presently hidden in a specialized module (and its name with the strange "_a" extension does not help for its visibility)
It should be moved toward the rand() & grand() common help section.
HOW TO REPRODUCE THE BUG:
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help.scilab.org/docs/6.0.2/en_US/prbs_a.html
OTHER INFORMATION:
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See also the bug 16090