[master] 3ce0d377e ws functions are not part of vrt, so mark them

[Nils Goroll]

commit 3ce0d377ed55cdb964cebf5d124c18d3c336576a
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Mon Apr 8 15:18:44 2019 +0200

    ws functions are not part of vrt, so mark them
    
    Yet having the changelog in one place is useful

diff --git a/include/vrt.h b/include/vrt.h
index a0c4d4753..05ab88d7b 100644
--- a/include/vrt.h
+++ b/include/vrt.h
@@ -111,11 +111,11 @@
  *	VRT_vcl_get added
  *	VRT_vcl_rel added
  *	VRT_fail added
- *	WS_Reset and WS_Snapshot signatures changed
- *	WS_Front added
- *	WS_ReserveLumps added
- *	WS_Inside added
- *	WS_Assert_Allocated added
+ *	[cache.h] WS_Reset and WS_Snapshot signatures changed
+ *	[cache.h] WS_Front added
+ *	[cache.h] WS_ReserveLumps added
+ *	[cache.h] WS_Inside added
+ *	[cache.h] WS_Assert_Allocated added
  * 5.0:
  *	Varnish 5.0 release "better safe than sorry" bump
  * 4.0: