Add Next Protocol Negotiation.

apps/apps.h

diff --git a/apps/apps.h b/apps/apps.h
index b1b7e97..bc4d6ee 100644
--- a/apps/apps.h
+++ b/apps/apps.h
@@ -364,3 +364,7 @@
 #define TM_STOP		1
 double app_tminterval (int stop,int usertime);
 #endif
+
+#ifndef OPENSSL_NO_NPN
+unsigned char *next_protos_parse(unsigned short *outlen, const char *in);
+#endif