Set default option to exclude pj_stricmp_alnum()

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@354 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjlib/include/pj/string_i.h b/pjlib/include/pj/string_i.h
index 25fc036..57cae7b 100644
--- a/pjlib/include/pj/string_i.h
+++ b/pjlib/include/pj/string_i.h
@@ -195,6 +195,7 @@
     }
 }
 
+#if defined(PJ_HAS_STRICMP_ALNUM) && PJ_HAS_STRICMP_ALNUM!=0
 PJ_IDEF(int) strnicmp_alnum( const char *str1, const char *str2,
 			     int len)
 {
@@ -263,6 +264,7 @@
 	    return 0;
     }
 }
+#endif	/* PJ_HAS_STRICMP_ALNUM */
 
 PJ_IDEF(int) pj_stricmp2( const pj_str_t *str1, const char *str2)
 {