patch 9.0.0421: MS-Windows makefiles are inconsistently named

Problem:    MS-Windows makefiles are inconsistently named.
Solution:   Use consistent names. (Ken Takata, closes #11088)
diff --git a/src/testdir/Make_mvc.mak b/src/testdir/Make_mvc.mak
new file mode 100644
index 0000000..882c5d0
--- /dev/null
+++ b/src/testdir/Make_mvc.mak
@@ -0,0 +1,152 @@
+#
+# Makefile to run all tests for Vim, on Dos-like machines.
+#
+# Requires a set of Unix tools: echo, diff, etc.
+
+VIMPROG = ..\\vim
+
+default: nongui
+
+!include Make_all.mak
+
+# Explicit dependencies.
+test_options.res test_alot.res: opt_test.vim
+
+TEST_OUTFILES = $(SCRIPTS_TINY_OUT)
+DOSTMP = dostmp
+DOSTMP_OUTFILES = $(TEST_OUTFILES:test=dostmp\test)
+DOSTMP_INFILES = $(DOSTMP_OUTFILES:.out=.in)
+
+.SUFFIXES: .in .out .res .vim
+
+# Add --gui-dialog-file to avoid getting stuck in a dialog.
+COMMON_ARGS = $(NO_INITS) --gui-dialog-file guidialog
+
+nongui:	nolog tinytests newtests report
+
+gui:	nolog tinytests newtests report
+
+tiny:	nolog tinytests report
+
+benchmark: $(SCRIPTS_BENCH)
+
+report:
+	@rem without the +eval feature test_result.log is a copy of test.log
+	@if exist test.log ( copy /y test.log test_result.log > nul ) \
+		else ( echo No failures reported > test_result.log )
+	$(VIMPROG) -u NONE $(COMMON_ARGS) -S summarize.vim messages
+	@echo.
+	@echo Test results:
+	@cmd /c type test_result.log
+	@if exist test.log ( echo TEST FAILURE & exit /b 1 ) \
+		else ( echo ALL DONE )
+
+
+# Execute an individual new style test, e.g.:
+# 	nmake -f Make_mvc.mak test_largefile
+$(NEW_TESTS):
+	-if exist $@.res del $@.res
+	-if exist test.log del test.log
+	-if exist messages del messages
+	@$(MAKE) -nologo -f Make_mvc.mak $@.res VIMPROG=$(VIMPROG)
+	@type messages
+	@if exist test.log exit 1
+
+
+# Delete files that may interfere with running tests.  This includes some files
+# that may result from working on the tests, not only from running them.
+clean:
+	-if exist *.out del *.out
+	-if exist *.failed del *.failed
+	-if exist *.res del *.res
+	-if exist $(DOSTMP) rd /s /q $(DOSTMP)
+	-if exist test.in del test.in
+	-if exist test.ok del test.ok
+	-if exist Xdir1 rd /s /q Xdir1
+	-if exist Xfind rd /s /q Xfind
+	-if exist XfakeHOME rd /s /q XfakeHOME
+	-if exist X* del X*
+	-for /d %i in (X*) do @rd /s/q %i
+	-if exist viminfo del viminfo
+	-if exist test.log del test.log
+	-if exist test_result.log del test_result.log
+	-if exist messages del messages
+	-if exist benchmark.out del benchmark.out
+	-if exist opt_test.vim del opt_test.vim
+	-if exist guidialog del guidialog
+	-if exist guidialogfile del guidialogfile
+
+nolog:
+	-if exist test.log del test.log
+	-if exist test_result.log del test_result.log
+	-if exist messages del messages
+
+
+# Tiny tests.  Works even without the +eval feature.
+tinytests: $(SCRIPTS_TINY_OUT)
+
+# Copy the input files to dostmp, changing the fileformat to dos.
+$(DOSTMP_INFILES): $(*B).in
+	if not exist $(DOSTMP)\NUL md $(DOSTMP)
+	if exist $@ del $@
+	$(VIMPROG) -u dos.vim $(COMMON_ARGS) "+set ff=dos|f $@|wq" $(*B).in
+
+# For each input file dostmp/test99.in run the tests.
+# This moves test99.in to test99.in.bak temporarily.
+$(TEST_OUTFILES): $(DOSTMP)\$(*B).in
+	-@if exist test.out DEL test.out
+	-@if exist $(DOSTMP)\$(*B).out DEL $(DOSTMP)\$(*B).out
+	move $(*B).in $(*B).in.bak > nul
+	copy $(DOSTMP)\$(*B).in $(*B).in > nul
+	copy $(*B).ok test.ok > nul
+	$(VIMPROG) -u dos.vim $(COMMON_ARGS) -s dotest.in $(*B).in
+	-@if exist test.out MOVE /y test.out $(DOSTMP)\$(*B).out > nul
+	-@if exist $(*B).in.bak move /y $(*B).in.bak $(*B).in > nul
+	-@if exist test.ok del test.ok
+	-@if exist Xdir1 rd /s /q Xdir1
+	-@if exist Xfind rd /s /q Xfind
+	-@if exist XfakeHOME rd /s /q XfakeHOME
+	-@del X*
+	-@if exist viminfo del viminfo
+	$(VIMPROG) -u dos.vim $(COMMON_ARGS) "+set ff=unix|f test.out|wq" \
+		$(DOSTMP)\$(*B).out
+	@diff test.out $*.ok & if errorlevel 1 \
+		( move /y test.out $*.failed > nul \
+		 & del $(DOSTMP)\$(*B).out \
+		 & echo $* FAILED >> test.log ) \
+		else ( move /y test.out $*.out > nul )
+
+
+# New style of tests uses Vim script with assert calls.  These are easier
+# to write and a lot easier to read and debug.
+# Limitation: Only works with the +eval feature.
+
+newtests: newtestssilent
+	@if exist messages type messages
+
+newtestssilent: $(NEW_TESTS_RES)
+
+.vim.res:
+	@echo $(VIMPROG) > vimcmd
+	$(VIMPROG) -u NONE $(COMMON_ARGS) -S runtest.vim $*.vim
+	@del vimcmd
+
+test_gui.res: test_gui.vim
+	@echo $(VIMPROG) > vimcmd
+	$(VIMPROG) -u NONE $(COMMON_ARGS) -S runtest.vim $*.vim
+	@del vimcmd
+
+test_gui_init.res: test_gui_init.vim
+	@echo $(VIMPROG) > vimcmd
+	$(VIMPROG) -u gui_preinit.vim -U gui_init.vim $(NO_PLUGINS) -S runtest.vim $*.vim
+	@del vimcmd
+
+opt_test.vim: ../optiondefs.h gen_opt_test.vim
+	$(VIMPROG) -u NONE -S gen_opt_test.vim --noplugin --not-a-term ../optiondefs.h
+
+test_bench_regexp.res: test_bench_regexp.vim
+	-if exist benchmark.out del benchmark.out
+	@echo $(VIMPROG) > vimcmd
+	$(VIMPROG) -u NONE $(COMMON_ARGS) -S runtest.vim $*.vim
+	@del vimcmd
+	@IF EXIST benchmark.out ( type benchmark.out )