patch 8.2.2151: $dir not expanded when configure checks for moonjit

Problem:    $dir not expanded when configure checks for moonjit.
Solution:   Use double quotes instead of single quotes. (closes #7478)

Author: brammool

src/auto/configure

@@ -5479,7 +5479,7 @@ $as_echo "no" >&6; }
 	  inc_path="$vi_cv_path_lua_pfx/include"
 	  for dir in "$inc_path"/moonjit-[0-9]* ; do
 	    if test -d "$dir" ; then
-	      lua_suf=`basename '$dir'`
+	      lua_suf=`basename "$dir"`
 	      lua_suf="/$lua_suf"
 	      break
 	    fi

src/configure.ac

@@ -632,7 +632,7 @@ if test "$enable_luainterp" = "yes" -o "$enable_luainterp" = "dynamic"; then
 	  inc_path="$vi_cv_path_lua_pfx/include"
 	  for dir in "$inc_path"/moonjit-[[0-9]]* ; do
 	    if test -d "$dir" ; then
-	      lua_suf=`basename '$dir'`
+	      lua_suf=`basename "$dir"`
 	      lua_suf="/$lua_suf"
 	      break
 	    fi

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2151,
 /**/
     2150,
 /**/