5910 libnisdb won't build with modern GCC

@@ -17,10 +17,11 @@
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
 /*
+ * Copyright 2015 Gary Mills
  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 /*
  * DESCRIPTION: Contains dit_access interface support functions.

@@ -35,10 +36,11 @@
 #include <stdlib.h>
 #include <syslog.h>
 #include <ndbm.h>
 #include <strings.h>
 #include <errno.h>
+#include <ctype.h>
 #include "../ldap_util.h"
 #include "../ldap_map.h"
 #include "../ldap_parse.h"
 #include "../ldap_structs.h"
 #include "../ldap_val.h"

@@ -122,15 +124,13 @@
 processSplitField(__nis_table_mapping_t *sf, __nis_value_t *inVal,
                         int *nv, int *statP) {
 
         char                    *sepset;
         __nis_rule_value_t      *rvq;
-        __nis_mapping_format_t  *ftmp;
         __nis_value_t           **valA, *tempVal;
         int                     i, j, res, numVals, oldlen, count;
         char                    *str, *oldstr;
-        char                    *myself = "processSplitField";
 
         /* sf will be non NULL */
 
         if (inVal == 0 || inVal->type != vt_string) {
                 *statP =  MAP_PARAM_ERROR;

@@ -252,11 +252,11 @@
         __nis_rule_value_t      *rvq, *subrvq, *newrvq;
         __nis_value_t           *val;
         __nis_value_t           **valA;
         __nis_table_mapping_t   *sf;
         int                     valueLen, comLen, numVals, nr, count = 1;
-        int                     i, j, k, l, af;
+        int                     i, j, k, l;
         char                    *ipaddr, *ipvalue;
 
         /*  At this point, 't' is always non NULL */
 
         /* Initialize rule-value */

@@ -643,11 +643,11 @@
  * only in key.
  */
 suc_code
 buildNISRuleValue(__nis_table_mapping_t *t, __nis_rule_value_t *rv,
                                         char *domain) {
-        int                     r, i, j, k, l, index, nrq, res, len;
+        int                     r, i, j, k, l, nrq, res, len;
         int                     numItems, splitname, count, statP;
         __nis_value_t           *rval;
         __nis_mapping_item_t    *litem;
         __nis_mapping_rule_t    *rl;
         __nis_rule_value_t      *rvq;

@@ -1008,13 +1008,13 @@
                                                         int *statP) {
         __nis_table_mapping_t   *t;
         __nis_rule_value_t      *rv_request = 0, *rv_result = 0;
         __nis_ldap_search_t     *ls;
         __nis_object_dn_t       *objectDN = NULL;
-        int                     i, rc, nr = 0, nv = 0;
+        int                     i, rc, nr = 0;
         datum                   *datval = 0;
-        char                    *skey, *str, *sipkey;
+        char                    *skey, *str;
         char                    *myself = "singleReadFromDIT";
 
         *statP = SUCCESS;
 
         if (!map || !domain || !key || !value) {