patch 8.0.0321: errors when trying to use scripts in tiny version

Problem:    When using the tiny version trying to load the matchit plugin
            gives an error. On MS-Windows some default mappings fail.
Solution:   Add a check if the command used is available. (Christian Brabandt)

runtime/macros/matchit.vim

@@ -1,3 +1,5 @@
 " Load the matchit package.
 " For those users who were loading the matchit plugin from here.
+if 1
     packadd matchit
+endif

runtime/mswin.vim

@@ -1,7 +1,7 @@
 " Set options and add mapping such that Vim behaves a lot like MS-Windows
 "
 " Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last change:	2012 Jul 25
+" Last change:	2017 Feb 09
 
 " bail out if this isn't wanted (mrsvim.vim uses this).
 if exists("g:skip_loading_mswin") && g:skip_loading_mswin
@@ -23,6 +23,7 @@ set backspace=indent,eol,start whichwrap+=<,>,[,]
 " backspace in Visual mode deletes selection
 vnoremap <BS> d
 
+if has("clipboard")
     " CTRL-X and SHIFT-Del are Cut
     vnoremap <C-X> "+x
     vnoremap <S-Del> "+x
@@ -37,6 +38,7 @@ map <S-Insert>		"+gP
 
     cmap <C-V>		<C-R>+
     cmap <S-Insert>		<C-R>+
+endif
 
 " Pasting blockwise and linewise selections is not possible in Insert and
 " Visual mode without the +virtualedit feature.  They are pasted as if they
@@ -44,8 +46,10 @@ cmap <S-Insert>		<C-R>+
 " Uses the paste.vim autoload script.
 " Use CTRL-G u to have CTRL-Z only undo the paste.
 
+if 1
     exe 'inoremap <script> <C-V> <C-G>u' . paste#paste_cmd['i']
     exe 'vnoremap <script> <C-V> ' . paste#paste_cmd['v']
+endif
 
 imap <S-Insert>		<C-V>
 vmap <S-Insert>		<C-V>
@@ -99,6 +103,18 @@ inoremap <C-F4> <C-O><C-W>c
 cnoremap <C-F4> <C-C><C-W>c
 onoremap <C-F4> <C-C><C-W>c
 
+if has("gui")
+  " CTRL-F is the search dialog
+  noremap <C-F> :promptfind<CR>
+  inoremap <C-F> <C-\><C-O>:promptfind<CR>
+  cnoremap <C-F> <C-\><C-C>:promptfind<CR>
+
+  " CTRL-H is the replace dialog
+  noremap <C-H> :promptrepl<CR>
+  inoremap <C-H> <C-\><C-O>:promptrepl<CR>
+  cnoremap <C-H> <C-\><C-C>:promptrepl<CR>
+endif
+
 " restore 'cpoptions'
 set cpo&
 if 1

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    321,
 /**/
     320,
 /**/