patch 8.1.0774: VMS build is missing the blob file

Problem:    VMS build is missing the blob file.
Solution:   Add the blob file to the build rules. (Zoltan Arpadffy)
diff --git a/runtime/doc/os_vms.txt b/runtime/doc/os_vms.txt
index fc6da61..54b07ac 100644
--- a/runtime/doc/os_vms.txt
+++ b/runtime/doc/os_vms.txt
@@ -1,4 +1,4 @@
-*os_vms.txt*    For Vim version 8.1.  Last change: 2018 May 06
+*os_vms.txt*    For Vim version 8.1.  Last change: 2019 Jan 18
 
 
 		  VIM REFERENCE MANUAL
@@ -104,6 +104,8 @@
 You may want to use GUI with GTK icons, then you have to download and install
 GTK for OpenVMS or at least runtime shareable images - LIBGTK from
 polarhome.com
+Post 7.2 Vim uses GTK2+ while the last GTK on OpenVMS is 1.2.10, thefore
+the GTK build is no longer available. 
 
 For more advanced questions, please send your problem to Vim on VMS mailing
 list <vim-vms@polarhome.com>
@@ -201,10 +203,10 @@
 
 Example LOGIN.COM: >
 
-	$ define/nolog VIM RF10:[UTIL.VIM]
+ 	$ define/nolog VIM DKA0:[UTIL.VIM81]
 	$ vi*m :== mcr VIM:VIM.EXE
 	$ gv*im:== spawn/nowait/input=NLA0 mcr VIM:VIM.EXE -g -GEOMETRY 80x40
-	$ set disp/create/node=192.168.5.223/trans=tcpip
+	$ set disp/create/node=192.168.10.202/trans=tcpip
 
 Note: This set-up should be enough, if you are working on a standalone server or
 clustered environment, but if you want to use Vim as an internode editor in
@@ -764,6 +766,16 @@
 
 9. VMS related changes					*vms-changes*
 
+Version 8.1
+- make necessary changes to build v8.1 on VMS
+
+Version 8.0
+- solve the 100% cpu usage issue while waiting for a keystroke
+- correct the VMS warnings and errors around handling the INFINITY (used in json.c)
+- minor VMS port related changes 
+- correct the make_vms.mms file for 8.0 
+- fix [.TESTDIR]make_vms.mms for 8.0 
+
 Version 7.4
 - Undo: VMS can not handle more than one dot in the filenames use "dir/name" -> "dir/_un_name"
   add _un_ at the beginning to keep the extension