add command 'alterparam paramname=pvalue'
to change a global .param
add command 'alterparam subcktname pname=vpval'
to change a parameter inside of a subcircuit
For developing purpose only, and bound to HAVE_TSEARCH, HAVE_TDESTROY
IFparm descriptors must obey certain contracts,
1) aliases must be grouped together with their associated main descriptor,
and all must have flag IF_REDUNDANT set
2) there shall be no duplicated .id fields except for aliases.
3) aliased entries shall have consistent .dataType fields
check_ifparm will traverse all IFparm sets and report violations
h_vogt
rlar