fix config.h usage and clean up warnings

configure.ac

@@ -13,7 +13,7 @@ AM_INIT_AUTOMAKE([foreign subdir-objects -Wall])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
 AC_CONFIG_SRCDIR([README.txt])
-AC_CONFIG_HEADERS([codes_config.h])
+AC_CONFIG_HEADERS([codes_base_config.h])
 
 AX_PROG_BISON([],[AC_MSG_WARN([Could not find bison])])
 AX_PROG_FLEX([],[AC_MSG_WARN([Could not find flex])])

src/modelconfig/configfile.h

 #ifndef SRC_COMMON_MODELCONFIG_CONFIGFILE_H
 #define SRC_COMMON_MODELCONFIG_CONFIGFILE_H
 
+#include "codes_base_config.h"
+
 #ifdef HAVE_MALLOC_H
 #include <malloc.h>
 #endif

src/modelconfig/configstore.c

 #include <string.h>
 #include <assert.h>
+
+#include "codes_base_config.h"
+#include "configstore.h"
 #ifdef HAVE_MALLOC_H
 #include <malloc.h>
 #endif
-#include "configstore.h"
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
 
 
 struct  mcs_entry