patch 9.1.0527: inconsistent parameter in Makefiles for Vim executable

Problem:  inconsistent parameter in Makefiles for Vim executable
Solution: consistently use $VIMPROG across all Makefiles
          (RestorerZ)

closes: #15099

Signed-off-by: RestorerZ <restorer@mail2k.ru>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/po/Make_cyg.mak b/src/po/Make_cyg.mak
index 705858d..c04837e 100644
--- a/src/po/Make_cyg.mak
+++ b/src/po/Make_cyg.mak
@@ -16,7 +16,7 @@
 include Make_all.mak
 
 PACKAGE = vim
-VIM = ../vim
+VIMPROG = ../vim
 
 # Uncomment one of the lines below or modify it to put the path to your
 # gettext binaries
@@ -64,18 +64,18 @@
 	vim.desktop.in
 
 first_time: $(PO_INPUTLIST) $(PO_VIM_INPUTLIST)
-	$(VIM) -u NONE --not-a-term -S tojavascript.vim $(LANGUAGE).pot $(PO_VIM_INPUTLIST)
+	$(VIMPROG) -u NONE --not-a-term -S tojavascript.vim $(LANGUAGE).pot $(PO_VIM_INPUTLIST)
 	$(XGETTEXT) --default-domain=$(LANGUAGE) \
 		--add-comments $(XGETTEXT_KEYWORDS) $(PO_INPUTLIST) $(PO_VIM_JSLIST)
-	$(VIM) -u NONE --not-a-term -S fixfilenames.vim $(LANGUAGE).pot $(PO_VIM_INPUTLIST)
+	$(VIMPROG) -u NONE --not-a-term -S fixfilenames.vim $(LANGUAGE).pot $(PO_VIM_INPUTLIST)
 	$(RM) *.js
 
 $(PACKAGE).pot: $(PO_INPUTLIST) $(PO_VIM_INPUTLIST)
-	$(VIM) -u NONE --not-a-term -S tojavascript.vim $(PACKAGE).pot $(PO_VIM_INPUTLIST)
+	$(VIMPROG) -u NONE --not-a-term -S tojavascript.vim $(PACKAGE).pot $(PO_VIM_INPUTLIST)
 	$(XGETTEXT) --default-domain=$(PACKAGE) \
 		--add-comments $(XGETTEXT_KEYWORDS) $(PO_INPUTLIST) $(PO_VIM_JSLIST)
 	$(MV) $(PACKAGE).po $(PACKAGE).pot
-	$(VIM) -u NONE --not-a-term -S fixfilenames.vim $(PACKAGE).pot $(PO_VIM_INPUTLIST)
+	$(VIMPROG) -u NONE --not-a-term -S fixfilenames.vim $(PACKAGE).pot $(PO_VIM_INPUTLIST)
 	$(RM) *.js
 
 # Don't add a dependency here, we only want to update the .po files manually