Bug 571381 - Require NSIS 2.46 Unicode. r=mbanner

configure.in

@@ -4651,8 +4651,8 @@ dnl (unless in case of cross compiling, for which Unicode
 dnl is not yet sufficient).
 if test "$OS_ARCH" = "WINNT"; then
     REQ_NSIS_MAJOR_VER=2
-    MIN_NSIS_MINOR_VER=33
-    MOZ_PATH_PROGS(MAKENSISU, $MAKENSISU makensisu-2.46 makensisu makensis)
+    MIN_NSIS_MINOR_VER=46
+    MOZ_PATH_PROGS(MAKENSISU, $MAKENSISU makensisu-2.46 makensis)
     if test -n "$MAKENSISU" -o "$MAKENSISU" = ":"; then
         AC_MSG_RESULT([yes])
         changequote(,)