Fixed during review of new pulled code

extra/perror.c:
  Use strmov() instead of strcpy()
  Indentation fixes
sql/sql_table.cc:
  Revert back part of the old code as the new code didn't use mysql_data_home, which would have caused problems in the embedded server
sql/sql_update.cc:
  Ensure that used_index is always set (It has to be set because it's value is tested if order != 0)

extra/perror.c

@@ -213,12 +213,14 @@ int main(int argc,char *argv[])
       string 'Unknown Error'.  To avoid printing it we try to find the
       error string by asking for an impossible big error message.
     */
-    msg = strerror(10000);
+    msg= strerror(10000);
 
-    /* allocate a buffer for unknown_error since strerror always returns the same pointer 
-      on some platforms such as Windows */
-    unknown_error = malloc( strlen(msg)+1 );
-    strcpy( unknown_error, msg );
+    /*
+      Allocate a buffer for unknown_error since strerror always returns
+      the same pointer on some platforms such as Windows
+    */
+    unknown_error= malloc(strlen(msg)+1);
+    strmov(unknown_error, msg);
 
     for ( ; argc-- > 0 ; argv++)
     {
@@ -271,7 +273,7 @@ int main(int argc,char *argv[])
 
   /* if we allocated a buffer for unknown_error, free it now */
   if (unknown_error)
-	  free(unknown_error);
+    free(unknown_error);
 
   exit(error);
   return error;

sql/sql_table.cc

@@ -2272,7 +2272,10 @@ int mysql_create_like_table(THD* thd, TABLE_LIST* table,
     strxmov(src_path, (*tmp_table)->path, reg_ext, NullS);
   else
   {
-    fn_format( src_path, src_table, src_db, reg_ext, MYF(MY_UNPACK_FILENAME));
+    strxmov(src_path, mysql_data_home, "/", src_db, "/", src_table,
+	    reg_ext, NullS);
+    /* Resolve symlinks (for windows) */
+    fn_format(src_path, src_path, "", "", MYF(MY_UNPACK_FILENAME));
     if (access(src_path, F_OK))
     {
       my_error(ER_BAD_TABLE_ERROR, MYF(0), src_table);
@@ -2299,7 +2302,9 @@ int mysql_create_like_table(THD* thd, TABLE_LIST* table,
   }
   else
   {
-    fn_format( dst_path, table_name, db, reg_ext, MYF(MY_UNPACK_FILENAME));
+    strxmov(dst_path, mysql_data_home, "/", db, "/", table_name,
+	    reg_ext, NullS);
+    fn_format(dst_path, dst_path, "", "", MYF(MY_UNPACK_FILENAME));
     if (!access(dst_path, F_OK))
       goto table_exists;
   }

sql/sql_update.cc

@@ -167,7 +167,10 @@ int mysql_update(THD *thd,
   else if ((used_index=table->file->key_used_on_scan) < MAX_KEY)
     used_key_is_modified=check_if_key_used(table, used_index, fields);
   else
+  {
     used_key_is_modified=0;
+    used_index= MAX_KEY;
+  }
   if (used_key_is_modified || order)
   {
     /*