patch 7.4.1601

Problem:    README files take a lot of space in the top directory.
Solution:   Move most of them to "READMEdir".

READMEdir/README_dos.txt

@@ -0,0 +1,154 @@
+README_dos.txt for version 7.4 of Vim: Vi IMproved.
+
+This file explains the installation of Vim on MS-DOS and MS-Windows systems.
+See "README.txt" for general information about Vim.
+
+There are two ways to install Vim:
+A. Use the self-installing .exe file.
+B. Unpack .zip files and run the install.exe program.
+
+
+A. Using the self-installing .exe
+---------------------------------
+
+This is mostly self-explaining.  Just follow the prompts and make the
+selections.  A few things to watch out for:
+
+- When an existing installation is detected, you are offered to first remove
+  this.  The uninstall program is then started while the install program waits
+  for it to complete.  Sometimes the windows overlap each other, which can be
+  confusing.  Be sure the complete the uninstalling before continuing the
+  installation.  Watch the taskbar for uninstall windows.
+
+- When selecting a directory to install Vim, use the same place where other
+  versions are located.  This makes it easier to find your _vimrc file.  For
+  example "C:\Program Files\vim" or "D:\vim".  A name ending in "vim" is
+  preferred.
+
+- After selecting the directory where to install Vim, clicking on "Next" will
+  start the installation.
+
+
+B. Using .zip files
+-------------------
+
+These are the normal steps to install Vim from the .zip archives:
+
+1. Go to the directory where you want to put the Vim files.  Examples:
+	cd C:\
+	cd D:\editors
+   If you already have a "vim" directory, go to the directory in which it is
+   located.  Check the $VIM setting to see where it points to:
+	set VIM
+   For example, if you have
+	C:\vim\vim54
+   do
+	cd C:\
+   Binary and runtime Vim archives are normally unpacked in the same location,
+   on top of each other.
+
+2. Unpack the zip archives.  This will create a new directory "vim\vim74",
+   in which all the distributed Vim files are placed.  Since the directory
+   name includes the version number, it is unlikely that you overwrite
+   existing files.
+   Examples:
+	pkunzip -d gvim74.zip
+	unzip vim74w32.zip
+
+   You need to unpack the runtime archive and at least one of the binary
+   archives.  When using more than one binary version, be careful not to
+   overwrite one version with the other, the names of the executables
+   "vim.exe" and "gvim.exe" are the same.
+
+   After you unpacked the files, you can still move the whole directory tree
+   to another location.  That is where they will stay, the install program
+   won't move or copy the runtime files.
+
+   Only for the 32 bit DOS version on MS-DOS without DPMI support (trying to
+   run install.exe will produce an error message): Unpack the CSDPMI4B.ZIP
+   archive and follow the instructions in the documentation.
+
+3. Change to the new directory:
+	cd vim\vim74
+   Run the "install.exe" program.  It will ask you a number of questions about
+   how you would like to have your Vim setup.  Among these are:
+   - You can tell it to write a "_vimrc" file with your preferences in the
+     parent directory.
+   - It can also install an "Edit with Vim" entry in the Windows Explorer
+     popup menu.
+   - You can have it create batch files, so that you can run Vim from the
+     console or in a shell.  You can select one of the directories in your
+     $PATH.  If you skip this, you can add Vim to the search path manually:
+     The simplest is to add a line to your autoexec.bat.  Examples:
+	set path=%path%;C:\vim\vim74
+	set path=%path%;D:\editors\vim\vim74
+   - Create entries for Vim on the desktop and in the Start menu.
+
+That's it!
+
+
+Remarks:
+
+- If Vim can't find the runtime files, ":help" won't work and the GUI version
+  won't show a menubar.  Then you need to set the $VIM environment variable to
+  point to the top directory of your Vim files.  Example:
+    set VIM=C:\editors\vim
+  Vim version 7.4 will look for your vimrc file in $VIM, and for the runtime
+  files in $VIM/vim74.  See ":help $VIM" for more information.
+
+- To avoid confusion between distributed files of different versions and your
+  own modified vim scripts, it is recommended to use this directory layout:
+  ("C:\vim" is used here as the root, replace it with the path you use)
+  Your own files:
+	C:\vim\_vimrc			Your personal vimrc.
+	C:\vim\_viminfo			Dynamic info for 'viminfo'.
+	C:\vim\vimfiles\ftplugin\*.vim	Filetype plugins
+	C:\vim\...			Other files you made.
+  Distributed files:
+	C:\vim\vim74\vim.exe		The Vim version 7.4 executable.
+	C:\vim\vim74\doc\*.txt		The version 7.4 documentation files.
+	C:\vim\vim74\bugreport.vim	A Vim version 7.4 script.
+	C:\vim\vim74\...		Other version 7.4 distributed files.
+  In this case the $VIM environment variable would be set like this:
+	set VIM=C:\vim
+  Then $VIMRUNTIME will automatically be set to "$VIM\vim74".  Don't add
+  "vim74" to $VIM, that won't work.
+
+- You can put your Vim executable anywhere else.  If the executable is not
+  with the other Vim files, you should set $VIM. The simplest is to add a line
+  to your autoexec.bat.  Examples:
+	set VIM=c:\vim
+	set VIM=d:\editors\vim
+
+- If you have told the "install.exe" program to add the "Edit with Vim" menu
+  entry, you can remove it by running the "uninstal.exe".  See
+  ":help win32-popup-menu".
+
+- In Windows 95/98/NT you can create a shortcut to Vim.  This works for all
+  DOS and Win32 console versions.  For the console version this gives you the
+  opportunity to set defaults for the Console where Vim runs in.
+
+  1. On the desktop, click right to get a menu.  Select New/Shortcut.
+  2. In the dialog, enter Command line: "C:\command.com".  Click "Next".
+  3. Enter any name.  Click "Finish".
+     The new shortcut will appear on the desktop.
+  4. With the mouse pointer on the new shortcut, click right to get a menu.
+     Select Properties.
+  5. In the Program tab, change the "Cmdline" to add "/c" and the name of the
+     Vim executable.  Examples:
+	C:\command.com /c C:\vim\vim74\vim.exe
+	C:\command.com /c D:\editors\vim\vim74\vim.exe
+  6. Select the font, window size, etc. that you like.  If this isn't
+     possible, select "Advanced" in the Program tab, and deselect "MS-DOS
+     mode".
+  7. Click OK.
+
+  For gvim, you can use a normal shortcut on the desktop, and set the size of
+  the Window in your $VIM/_gvimrc:
+	set lines=30 columns=90
+
+
+For further information, type one of these inside Vim:
+	:help dos
+	:help msdos
+	:help win32