Install cook tool when installing janet.

Makefile

@@ -183,6 +183,8 @@ install: $(JANET_TARGET)
 	cp $(JANET_HEADERS) $(INCLUDEDIR)
 	mkdir -p $(LIBDIR)
 	cp $(JANET_LIBRARY) $(LIBDIR)/libjanet.so
+	mkdir -p $(JANET_PATH)
+	cp tools/cook.janet $(JANET_PATH)
 	cp janet.1 /usr/local/share/man/man1/
 	mandb
 	$(LDCONFIG)

src/core/core.janet

@@ -236,7 +236,7 @@
 (defmacro try
   "Try something and catch errors. Body is any expression,
   and catch should be a form with the first element a tuple. This tuple
-  should contain a binding for errors and an optional binding for 
+  should contain a binding for errors and an optional binding for
   the fiber wrapping the body. Returns the result of body if no error,
   or the result of catch if an error."
   [body catch]

tools/cook.janet

@@ -9,14 +9,14 @@
   [& args]
   (print ;args)
   (def res (os/shell (string ;args)))
-  (unless (zero? res) 
+  (unless (zero? res)
     (print "Error executing command: " ;args)
     (os/exit res)))
 
 (defn- mkdir
   "Make a directory. Not safe for user code."
   [path]
-  (if is-win 
+  (if is-win
     (shell "mkdir " path)
     (shell "mkdir -p " path)))