Rename libressl to libtls to avoid confusion and to make it easier to

distinguish between LibreSSL (the project) and libressl (the library).
Discussed with many.

src/include/Makefile

@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.195 2014/09/16 00:19:31 matthieu Exp $
+#	$OpenBSD: Makefile,v 1.196 2014/10/31 13:46:17 jsing Exp $
 #	$NetBSD: Makefile,v 1.59 1996/05/15 21:36:43 jtc Exp $
 
 #	@(#)Makefile	5.45.1.1 (Berkeley) 5/6/91
@@ -42,9 +42,9 @@ RDIRS=	../lib/libcrypto ../lib/libcurses ../lib/libedit \
 	../lib/libevent ../lib/libexpat ../lib/libform \
 	../lib/libfuse ../lib/libkeynote ../lib/libmenu \
 	../lib/libocurses ../lib/libossaudio ../lib/libpanel \
-	../lib/libpcap ../lib/libressl ../lib/librpcsvc \
-	../lib/librthread ../lib/libskey ../lib/libsqlite3 \
-	../lib/libssl ../lib/libusbhid ../lib/libutil ../lib/libz \
+	../lib/libpcap ../lib/librpcsvc ../lib/librthread ../lib/libskey \
+	../lib/libsqlite3 ../lib/libssl  ../lib/libtls \
+	../lib/libusbhid ../lib/libutil ../lib/libz \
 	../usr.bin/lex ../gnu/lib/libreadline \
 	../sys/arch/${MACHINE}