Fix a couple of problems in generating the AST code:

 * use %r instead of backticks since backticks are going away in Py3k
 * PyArena_Malloc() already sets PyErr_NoMemory so we don't need to do it again
 * the signature for ast2obj_int incorrectly used a bool, rather than a long

Parser/asdl_c.py

@@ -47,7 +47,7 @@ def reflow_lines(s, depth):
         # XXX this should be fixed for real
         if i == -1 and 'GeneratorExp' in cur:
             i = size + 3
-        assert i != -1, "Impossible line %d to reflow: %s" % (size, `s`)
+        assert i != -1, "Impossible line %d to reflow: %r" % (size, s)
         lines.append(padding + cur[:i])
         if len(lines) == 1:
             # find new size based on brace
@@ -299,10 +299,8 @@ class FunctionVisitor(PrototypeVisitor):
                 emit('}', 1)
 
         emit("p = (%s)PyArena_Malloc(arena, sizeof(*p));" % ctype, 1);
-        emit("if (!p) {", 1)
-        emit("PyErr_NoMemory();", 2)
+        emit("if (!p)", 1)
         emit("return NULL;", 2)
-        emit("}", 1)
         if union:
             self.emit_body_union(name, args, attrs)
         else:
@@ -474,7 +472,7 @@ static PyObject* ast2obj_bool(bool b)
     return PyBool_FromLong(b);
 }
 
-static PyObject* ast2obj_int(bool b)
+static PyObject* ast2obj_int(long b)
 {
     return PyInt_FromLong(b);
 }