[master] 282f3f4 Document req.ttl and when it is going to be removed

[Nils Goroll]

commit 282f3f41aa51d52d350b5e9cb821f9ff9f128117
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Mon Jan 16 13:58:43 2017 +0100

    Document req.ttl and when it is going to be removed
    
    closes #2014

diff --git a/lib/libvcc/generate.py b/lib/libvcc/generate.py
index 2f27243..c3b971b 100755
--- a/lib/libvcc/generate.py
+++ b/lib/libvcc/generate.py
@@ -280,6 +280,14 @@ sp_variables = [
 		'DURATION',
 		('client',),
 		('client',), """
+		Upper limit on the object age for cache lookups to return hit.
+
+		Usage of req.ttl should be replaced with a check on
+		obj.ttl in vcl_hit, returning miss when needed, but
+		this currently hits bug #1799, so an additional
+		workaround is required.
+
+		Deprecated and scheduled for removal with varnish release 7.
 		"""
 	),
 	('req.xid',