ada: Preliminary cleanup in aliasing support code
This declares an explicit temporary for the fields of the fat pointer type
in gnat_to_gnu_entity and removes the GNU_ prefix of the parameters of the
relate_alias_sets routine for the sake of brevity. No functional changes.
gcc/ada/
* gcc-interface/decl.cc (gnat_to_gnu_entity) <E_Array_Type>: Use a
separate FLD local variable to hold the first field of the fat
pointer type being built.
* gcc-interface/gigi.h (relate_alias_sets): Remove GNU_ prefix on
the first two parameters.
* gcc-interface/utils.cc (relate_alias_sets): Likewise and adjust.