[master] 513aee7 Add a reminder for a VRT_MINOR_VERSION bump

[Dridi Boukelmoune]

commit 513aee7831f3a24158fd49a4e8560ffce915b2f9
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Mon Dec 7 18:23:09 2015 +0100

    Add a reminder for a VRT_MINOR_VERSION bump
    
    This is for the 4.1 ABI, since the next major release will have a
    VRT_MAJOR_VERSION bump instead. The two functions may also change
    semantics before the next 4.1.x, but will still be _new_ as far as
    releases are concerned.

diff --git a/include/vrt.h b/include/vrt.h
index 2203bd8..96a3c64 100644
--- a/include/vrt.h
+++ b/include/vrt.h
@@ -40,6 +40,9 @@
  *
  * changes to consider with next VRT_MAJOR_VERSION bump:
  * - cache_vrt.c: -> ssize_t VRT_CacheReqBody(VRT_CTX, size_t)
+ *
+ * changes to consider with next VRT_MINOR_VERSION bump for 4.1:
+ * - cache_vcl.c: -> VRT_ref_vcl, VRT_rel_vcl
  */
 
 #define VRT_MAJOR_VERSION	3U