prevent boxing and immediatialy unboxing a record, when selecting a field from a selected unboxed record field of a record

the frontend of the compiler assumes the MatchNode yields a tuple without dictionaries,
so after adding the dictionaries the tuple selectors select incorrect values.
it would be better to fix this in the frontend, but it is easier in the backend,
therefore the code generator computes the number of dictionaries by subtracting
the arity of the result of the match node from the arity of the constructor,
and pops the dictionaries from the stack.

set nid_lhs_state_p when creating new functions,
create case, switch and push nodes for select and match functions

to prevent access to uninitialized value in is_tail_call_modulo_cons_node

this doesn't cause any problems, but valgrind complains

this doesn't cause any problems, but valgrind complains

that is/are only used if one of these masks was used

add BENumberedVarTypeNode, BENumberedTypeVar and BESetMemberTypeOfField to backend dll/shared library
import and export files

add BESetMemberTypeOfField to store the member type of dictionary fields

remove more unused fields

function parseCommandLine in module compile removes these