vim: add actual xxd version

Use the actual xxd version instead of the vim one for packaging.

Add matching CI test.

Signed-off-by: George Sapkin <george@sapk.in>

utils/vim/Makefile

@@ -9,7 +9,8 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=vim
 PKG_VERSION:=9.1
-PKG_RELEASE:=1
+PKG_XXD_VERSION:=2023.10.25
+PKG_RELEASE:=2
 VIMVER:=91
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
@@ -71,6 +72,7 @@ define Package/xxd
   CATEGORY:=Utilities
   TITLE:=make a hexdump or do the reverse
   URL:=http://www.vim.org/
+  VERSION:=$(PKG_XXD_VERSION)
 endef
 
 define Package/vim-full/conffiles

utils/vim/test.sh

@@ -2,6 +2,9 @@
 
 case "$1" in
 	vim|vim-full|vim-fuller)
-		vim --version | grep "$2"
+		vim --version | grep -F "$2"
+		;;
+	xxd)
+		xxd --version 2>&1 | grep -F "${2//./-}"
 		;;
 esac