Break out error codes, cleanup header files and HISTORY

strutil.h

@@ -1,15 +1,28 @@
 /*
  * strutil.h
- *
  * Copyright (C) 2ndQuadrant, 2010-2011
  *
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
  */
 
 #ifndef _STRUTIL_H_
 #define _STRUTIL_H_
 
 #include <stdlib.h>
-
+#include <errcode.h>
 
 #define QUERY_STR_LEN	8192
 #define MAXLEN			1024