Merge commit 'v2.6.27.20' into zygo-2.6.27.20-zb5s

diff --cc Makefile
index c04e92a1af3524744b72da637cfe60f0af4a735f,9f4860d0d7dfdabb7a45f0508a25a1b16c2503f7..edc669862ebcfc10615c769cf0f88eed21de2ba6
--- 1/Makefile
--- 2/Makefile
+++ b/Makefile
@@@ -1,11 -1,9 +1,11 @@@
  VERSION = 2
  PATCHLEVEL = 6
  SUBLEVEL = 27
- EXTRAVERSION = .19
+ EXTRAVERSION = .20
  NAME = Trembling Tortoise
  
 +EXTRAVERSION := $(EXTRAVERSION)-zb5s
 +
  # *DOCUMENTATION*
  # To see a list of typical targets execute "make help"
  # More info can be located in ./README