|  |  D.7.3.2 HilbertWeights Procedure from libraryrinvar.lib(see  rinvar_lib).
 
Purpose:
compute the weights of the "slack" variables needed for the
computation of the algebraic relations of the generators of 'I' s.t.
the Hilbert driven 'std' can be used.
Return:
intvec
Assume:
basering = K[t_1,...,t_m,...], 'I' is quasihomogenous w.r.t. 'w' and
contains only polynomials in t_1,...,t_m
 
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