Break out error codes, cleanup header files and HISTORY

strutil.c

@@ -3,6 +3,19 @@
  *
  * Copyright (C) 2ndQuadrant, 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/>.
+ *
  */
 
 #include <stdarg.h>
@@ -24,7 +37,7 @@ xvsnprintf(char *str, size_t size, const char *format, va_list ap)
 	if (retval >= size)
 	{
 		fprintf(stderr, "Buffer not large enough to format entire string\n");
-		exit(255);
+		exit(ERR_STR_OVERFLOW);
 	}
 
 	return retval;