Merge branch 'v42r6p1-release' into 'master'

Documentation and dependencies for the v42r6p1 release

See merge request !100

ReleaseNotes/v42r6p1.md

-2017-09-12 DaVinci v42r6p1
+2017-09-13 DaVinci v42r6p1
 ==========================
 
 Release for 2017 production
@@ -8,5 +8,8 @@ This version is released on the 2017-patches branch (but master as far as DaVinc
 It is based on Gaudi v28r2, LHCb v42r6p1, Rec v21r6p1, Phys v23r6p1, Analysis v18r5p1 and Stripping v11r3p1.
 Uses LCG_88 with ROOT 6.08.06.
 
-- Many tests updated and/or fixed.
-  - See merge requests !95, !93
+- Add StrippingCache for S29r1.
+  - See merge request !99
+- Fix most of the failing Tesla tests.
+  - See merge request !95
+k
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