Fixes needed to build 5.0.13 on Windows:

- reflect two "Makefile.am" changes in the respective "VC project" files,
- correct a typo in a (normally) unused macro parameter.

VC++Files/libmysqld/libmysqld.vcproj

@@ -2299,7 +2299,7 @@
 			</FileConfiguration>
 		</File>
 		<File
-			RelativePath="..\sql\protocol_cursor.cpp">
+			RelativePath="..\sql\sql_cursor.cpp">
 			<FileConfiguration
 				Name="Debug|Win32">
 				<Tool

VC++Files/sql/mysqld.vcproj

@@ -4578,7 +4578,7 @@
 			</FileConfiguration>
 		</File>
 		<File
-			RelativePath="protocol_cursor.cpp">
+			RelativePath="sql_cursor.cpp">
 			<FileConfiguration
 				Name="classic nt|Win32">
 				<Tool

sql/ha_federated.cc

@@ -1378,7 +1378,7 @@ static int free_share(FEDERATED_SHARE *share)
   if (!--share->use_count)
   {
     hash_delete(&federated_open_tables, (byte*) share);
-    my_free((gptr) share->scheme, MYF(MY_ALLOW_ZERO_PTR0));
+    my_free((gptr) share->scheme, MYF(MY_ALLOW_ZERO_PTR));
     share->scheme= 0;
     thr_lock_delete(&share->lock);
     VOID(pthread_mutex_destroy(&share->mutex));