Fix all try.sh scripts to be more portable WRT gmake vs make.

2024/cable1/try.sh

@@ -25,7 +25,8 @@ fi
 #
 read -r -n 1 -p "Press any key to when ready: "
 echo 1>&2
-make CC="$CC" all >/dev/null || exit 1
+MAKE=$(which gmake)
+${MAKE:=make} CC="$CC" all >/dev/null || exit 1
 
 # select a game
 #