* apply default replacements also to defines set by -d:

      - -d with $ is not possible so this should not break any existing compiler call
      - this fixes also the strange error message "Error: malformed parameter: -dlinux"
        when e.g. -d$FPCOS is passed as the default replacements are applied to the
        error message

compiler/options.pas

@@ -1964,6 +1964,7 @@ begin
            'd' :
              begin
                l:=Pos(':=',more);
+               DefaultReplacements(more);
                if l>0 then
                  hs:=copy(more,1,l-1)
                else