Fix implicit basename(3) declaration

--- a/src/direct_api.c
+++ b/src/direct_api.c
@@ -38,6 +38,7 @@
 #include <limits.h>
 #include <errno.h>
 #include <dirent.h>
+#include <libgen.h>
 
 #include "user_internal.h"
 #include "seuser_internal.h"
--- a/src/conf-parse.y
+++ b/src/conf-parse.y
@@ -31,6 +31,8 @@
 #include <stdlib.h>
 #include <string.h>
 
+#define basename(path) (strrchr((path),'/') ? strrchr((path),'/')+1 : (path))
+
 extern int semanage_lex(void);                /* defined in conf-scan.c */
 extern int semanage_lex_destroy(void);        /* defined in conf-scan.c */
 int semanage_error(const char *msg);