Minor fixes, all tests pass

I don't know how long_literal used to work, must have ran tests before
that refactor...

Cython/Compiler/Symtab.py

@@ -401,7 +401,7 @@ class Scope:
         if entry and not entry.type.is_cfunction:
             # This is legal Python, but for now will produce invalid C.
             error(pos, "'%s' already declared" % name)
-        entry = self.declare_var(name, py_object_type, pos)
+        entry = self.declare_var(name, py_object_type, pos, visibility='extern')
         entry.signature = pyfunction_signature
         self.pyfunc_entries.append(entry)
         return entry

Cython/Utils.py

@@ -121,7 +121,9 @@ def long_literal(value):
         if len(value) < 2:
             value = int(value)
         elif value[0] == 0:
-            return int(value, 8)
+            value = int(value, 8)
         elif value[1] in 'xX':
-            return int(value[2:], 16)
+            value = int(value[2:], 16)
+        else:
+            value = int(value)
     return not -2**31 <= value < 2**31

tests/compile/extimportedsubtype.pyx

@@ -4,4 +4,4 @@ cdef class Sub2(Crunchy):
     cdef char character
 
 cdef class Sub1(Sub2):
-    cdef char character
+    pass

tests/run/pylistsubtype.pyx

@@ -29,4 +29,4 @@ cdef class Sub2(list):
     cdef char character
 
 cdef class Sub1(Sub2):
-    cdef char character
+    pass