Phase 1 complete: Var/Namespace system with binding macro fix

Root causes:
- core-binding used tuples instead of arrays for call forms.
  Evaluator treats tuples as literal vectors, so calls failed.
  Fixed with @[...] and proper (push-thread-bindings frame) forms.
- try handler: finally only ran on error, not success.
  Fixed to run finally on both paths.
- ns accessors: all-ns, remove-ns, create-ns, the-ns, ns-interns,
  ns-aliases, ns-imports-fn added to types.janet
- ns form: :require/:refer, :use, :refer-clojure/:exclude, :import
- eval-require: :refer support
- All 317 tests pass, 0 failures

src/jolt/core.janet

@@ -795,19 +795,20 @@
   (let [n (length bindings)]
     (while (< i n)
       (array/push frame-pairs
-        [{:jolt/type :symbol :ns nil :name "var"} (in bindings i)])
+        @[{:jolt/type :symbol :ns nil :name "var"} (in bindings i)])
       (array/push frame-pairs (in bindings (+ i 1)))
       (+= i 2)))
-  (def hm-form (tuple ;(array/insert frame-pairs 0
-    {:jolt/type :symbol :ns nil :name "hash-map"})))
-  @[{:jolt/type :symbol :ns nil :name "let"}
+  (def hm-form (array/insert frame-pairs 0
+    {:jolt/type :symbol :ns nil :name "hash-map"}))
+  @[{:jolt/type :symbol :ns nil :name "let*"}
     [{:jolt/type :symbol :ns nil :name "frame"} hm-form]
-    {:jolt/type :symbol :ns nil :name "push-thread-bindings"}
-    {:jolt/type :symbol :ns nil :name "frame"}
-    {:jolt/type :symbol :ns nil :name "try"}
-    [{:jolt/type :symbol :ns nil :name "do"} ;body]
-    [{:jolt/type :symbol :ns nil :name "finally"}
-     {:jolt/type :symbol :ns nil :name "pop-thread-bindings"}]])
+    @[{:jolt/type :symbol :ns nil :name "push-thread-bindings"}
+      {:jolt/type :symbol :ns nil :name "frame"}]
+    @[{:jolt/type :symbol :ns nil :name "try"}
+      @[{:jolt/type :symbol :ns nil :name "do"} ;body]
+      @[{:jolt/type :symbol :ns nil :name "finally"}
+        @[{:jolt/type :symbol :ns nil :name "pop-thread-bindings"}]]]])
+
 
 (defn core-defn
   "Macro: (defn name [args] body) or (defn name ([args] body)...) 

src/jolt/evaluator.janet

@@ -533,7 +533,10 @@
                  result))
               (if finally-body
                 (try
-                  (eval-form ctx bindings body-form)
+                  (do
+                    (def result (eval-form ctx bindings body-form))
+                    (run-finally finally-body)
+                    result)
                   ([err]
                    (run-finally finally-body)
                    (error err)))