update next and template try scripts

With commit fd483c2bed, all
try scripts now use:

```
MAKE=$(command -v gmake)
${MAKE:=make} CC="$CC" all >/dev/null || exit 1
```

to find `gmake(1)` and if not `make(1)` to make.

This commit updates the next and template try scripts accordingly.

next/try.alt.sh

@@ -24,7 +24,8 @@
 # XXX - then change the 'all' to 'all alt' in the below command.            - XXX
 # XXX - Later, if the submission wins, it can be changed to 'everything'.   - XXX
 # XXX -                                                                     - XXX
-make CC="$CC" all >/dev/null || exit 1
+MAKE=$(command -v gmake)
+${MAKE:=make} CC="$CC" all >/dev/null || exit 1
 
 # clear the screen
 #

next/try.sh

@@ -24,7 +24,8 @@
 # XXX - then change the 'all' to 'all alt' in the below command.            - XXX
 # XXX - Later, if the submission wins, it can be changed to 'everything'.   - XXX
 # XXX -                                                                     - XXX
-make CC="$CC" all >/dev/null || exit 1
+MAKE=$(command -v gmake)
+${MAKE:=make} CC="$CC" all >/dev/null || exit 1
 
 # clear the screen
 #

template/entry/try.sh.judging

@@ -9,7 +9,8 @@
 
 # make sure the program has been built
 #
-make CC="$CC" all >/dev/null || exit 1
+MAKE=$(command -v gmake)
+${MAKE:=make} CC="$CC" all >/dev/null || exit 1
 
 # clear the screen
 #