unix pmcleansystem reinstate missing unlink

Unix/PmCleanSystem.icl

@@ -434,12 +434,15 @@ where
 				=  (ps,link_ok)
 				=  (ps,link_ok)
 		//Call gcc
-		= linkGCC [temp_file_name] options2 ps
+		#! (ps, link_ok) = linkGCC [temp_file_name] options2 ps
+		| unlink (temp_file_name+++"\0")<>0
+			= (ps,link_ok)
+			= (ps,link_ok)
 
 	//Just link with gcc
 	linkGCC object_paths gccOptions ps
-		# gcc_options = add_options_string_to_args 0 gccOptions (StrictListToList (Append library_file_names "-lm"))
-		# ld_args = ["-o", path : object_paths ] ++ gcc_options
+		# ld_args = add_options_string_to_args 0 gccOptions (StrictListToList (Append library_file_names "-lm"))
+		# ld_args = ["-o", path : object_paths ] ++ ld_args
 		  ld_args = IF_MACOSX ld_args (IF_INT_64_OR_32 ["-no-pie":ld_args] ld_args)
 		  ld_args = if gen_symbol_table ld_args ["-s":ld_args]
 		# ld = "/usr/bin/gcc"