Vim 8.1 release

Update version number and information.  Fix a couple of tests.
diff --git a/src/version.h b/src/version.h
index 62c12b0..d3e575d 100644
--- a/src/version.h
+++ b/src/version.h
@@ -15,13 +15,13 @@
 
 #define VIM_VERSION_MAJOR		 8
 #define VIM_VERSION_MAJOR_STR		"8"
-#define VIM_VERSION_MINOR		 0
-#define VIM_VERSION_MINOR_STR		"0"
+#define VIM_VERSION_MINOR		 1
+#define VIM_VERSION_MINOR_STR		"1"
 #define VIM_VERSION_100	    (VIM_VERSION_MAJOR * 100 + VIM_VERSION_MINOR)
 
-#define VIM_VERSION_BUILD		 281
-#define VIM_VERSION_BUILD_BCD		0x119
-#define VIM_VERSION_BUILD_STR		"281"
+#define VIM_VERSION_BUILD		 282
+#define VIM_VERSION_BUILD_BCD		0x11a
+#define VIM_VERSION_BUILD_STR		"282"
 #define VIM_VERSION_PATCHLEVEL		 0
 #define VIM_VERSION_PATCHLEVEL_STR	"0"
 /* Used by MacOS port should be one of: development, alpha, beta, final */
@@ -33,8 +33,8 @@
  * VIM_VERSION_MEDIUM is used for the startup-screen.
  * VIM_VERSION_LONG is used for the ":version" command and "Vim -h".
  */
-#define VIM_VERSION_NODOT	"vim80"
-#define VIM_VERSION_SHORT	"8.0"
-#define VIM_VERSION_MEDIUM	"8.0"
-#define VIM_VERSION_LONG	"VIM - Vi IMproved 8.0 (2016 Sep 12)"
-#define VIM_VERSION_LONG_DATE	"VIM - Vi IMproved 8.0 (2016 Sep 12, compiled "
+#define VIM_VERSION_NODOT	"vim81"
+#define VIM_VERSION_SHORT	"8.1"
+#define VIM_VERSION_MEDIUM	"8.1"
+#define VIM_VERSION_LONG	"VIM - Vi IMproved 8.1 (2018 May 17)"
+#define VIM_VERSION_LONG_DATE	"VIM - Vi IMproved 8.1 (2018 May 17, compiled "