Updated runtime files. Remove version checks for Vim older than 6.0.

runtime/doc/os_win32.txt

@@ -1,4 +1,4 @@
-*os_win32.txt*  For Vim version 7.4.  Last change: 2016 Mar 05
+*os_win32.txt*  For Vim version 7.4.  Last change: 2016 Aug 28
 
 
 		  VIM REFERENCE MANUAL    by George Reilly
@@ -144,29 +144,8 @@ the console.
 5. Running under Windows 3.1				*win32-win3.1*
 
 						*win32s* *windows-3.1*
-There is a special version of Gvim that runs under Windows 3.1 and 3.11.  You
-need the gvim.exe that was compiled with Visual C++ 4.1.
-
-To run the Win32 version under Windows 3.1, you need to install Win32s.  You
-might have it already from another Win32 application which you have installed.
-If Vim doesn't seem to be running properly, get the latest version: 1.30c.
-You can find it at:
-
-	http://support.microsoft.com/download/support/mslfiles/pw1118.exe
-
-(Microsoft moved it again, we don't know where it is now :-( ).
-
-The reason for having two versions of gvim.exe is that the Win32s version was
-compiled with VC++ 4.1.  This is the last version of VC++ that supports Win32s
-programs.  VC++ 5.0 is better, so that one was used for the Win32 version.
-Apart from that, there is no difference between the programs.  If you are in a
-mixed environment, you can use the gvim.exe for Win32s on both.
-
-The Win32s version works the same way as the Win32 version under 95/NT.  When
-running under Win32s the following differences apply:
-- You cannot use long file names, because Windows 3.1 doesn't support them!
-- When executing an external command, it doesn't return an exit code.  After
-  doing ":make" you have to do ":cn" yourself.
+There was a special version of Gvim that runs under Windows 3.1 and 3.11.
+Support was removed in patch 7.4.1363.
 
 ==============================================================================
 6. Win32 mini FAQ					*win32-faq*