patch 8.0.0429: options test does not always test everything

Problem:    Options test does not always test everything.
Solution:   Fix dependency for opt_test.vim.  Give a message when opt_test.vim
            was not found.

src/testdir/Make_all.mak

@@ -221,4 +221,4 @@ test49.out: test49.vim
 
 test60.out: test60.vim
 
-test_options.res: opt_test.vim
+test_options.res test_alot.res: opt_test.vim

src/testdir/Make_dos.mak

@@ -130,4 +130,4 @@ test_gui_init.res: test_gui_init.vim
 	@del vimcmd
 
 opt_test.vim: ../option.c gen_opt_test.vim
-	$(VIMPROG) -u gen_opt_test.vim --noplugin --not-a-term
+	$(VIMPROG) -u gen_opt_test.vim --noplugin --not-a-term ../option.c

src/testdir/Make_ming.mak

@@ -133,4 +133,4 @@ test_gui_init.res: test_gui_init.vim
 	@$(DEL) vimcmd
 
 opt_test.vim: ../option.c gen_opt_test.vim
-	$(VIMPROG) -u gen_opt_test.vim --noplugin --not-a-term
+	$(VIMPROG) -u gen_opt_test.vim --noplugin --not-a-term ../option.c

src/testdir/Makefile

@@ -142,5 +142,4 @@ test_gui_init.res: test_gui_init.vim
 	@rm vimcmd
 
 opt_test.vim: ../option.c gen_opt_test.vim
-	$(VIMPROG) -u gen_opt_test.vim --noplugin --not-a-term
-
+	$(VIMPROG) -u gen_opt_test.vim --noplugin --not-a-term ../option.c

src/testdir/gen_opt_test.vim

@@ -13,7 +13,7 @@ let script = [
       \ 'let save_term = &term',
       \ ]
 
-edit option.c
+edit
 /#define p_term
 let end = line('.')
 
@@ -197,7 +197,7 @@ call add(script, 'let &term = save_term')
 call add(script, 'let &columns = save_columns')
 call add(script, 'let &lines = save_lines')
 
-call writefile(script, 'testdir/opt_test.vim')
+call writefile(script, 'opt_test.vim')
 
 endif
 

src/testdir/test_options.vim

@@ -301,8 +301,9 @@ func Test_set_all()
 endfunc
 
 func Test_set_values()
-  " The file is only generated when running "make test" in the src directory.
   if filereadable('opt_test.vim')
     source opt_test.vim
+  else
+    throw 'Skipped: opt_test.vim does not exist'
   endif
 endfunc

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    429,
 /**/
     428,
 /**/