Better handle cases where the scope part of a heirarchical name does
not match any existing scope, or where scope index expressions are
not correct.
Signed-off-by: Stephen Williams <steve@icarus.com>
more general concept of arrays. The NetMemory and NetEMemory
classes are removed from the ivl core program, and the IVL_LPM_RAM
lpm type is removed from the ivl_target API.