Fix a lots of bugs in the newbinding to pass all the tests.

NOTE: debug info has not been implemented yet.

test/malloc.py

@@ -0,0 +1,16 @@
+from llvm.core import *
+
+def test():
+    m = Module.new('sdf')
+    f = m.add_function(Type.function(Type.void(), []), 'foo')
+    bb = f.append_basic_block('entry')
+    b = Builder.new(bb)
+    alloc = b.malloc(Type.int(), 'ha')
+    inst = b.free(alloc)
+    alloc = b.malloc_array(Type.int(), Constant.int(Type.int(), 10), 'hee')
+    inst = b.free(alloc)
+    b.ret_void()
+    print m
+
+if __name__ == '__main__':
+    test()