Added definition of macro EXPAND-IN-CURRENT-ENV.
Added test for FOR-FROM-TO with explicit macro expansion.
Added test for FOR-FROM-TO with explicit macro expansion of TO form.
Added test for FOR-FROM-TO-BY with explicit macro expansion of BY form.
Added test for FOR-DOWNFROM with explicit macro expansion of DOWNFROM form.
Added test for FOR-DOWNFROM-TO with explicit macro expansion of TO form.
Added test for FOR-FROM-DOWNTO with explicit macro expansion of FROM form.
Added test for FOR-FROM-DOWNTO with explicit macro expansion of DOWNTO form.
Added test for FOR-FROM-BELOW with explicit macro expansion of FROM form.
Added test for FOR-FROM-BELOW with explicit macro expansion of BELOW form.