expose lit mode interface in CKMesh.

- provide lit mode and wrap mode getter and setter in CKMesh.
- add lost flags setter in CKMesh.
- show lit mode and wrap mode data in Unvirt.
- add interface for lit mode in BMap, because some old Ballance map use lit mode to light objects.
- expose a raw c callback when creating bmap to allow user decide how the log output by themselves.
- change python bindings for BMap interface changes.

CodeGen/BMapBindings/snippets/header.py

@@ -32,6 +32,8 @@ bm_bool_p = ctypes.POINTER(bm_bool)
 bm_void_p = ctypes.c_void_p
 bm_void_pp = ctypes.POINTER(ctypes.c_void_p)
 
+bm_callback = ctypes.CFUNCTYPE(None, bm_CKSTRING)
+
 class bm_VxVector2(ctypes.Structure):
     _fields_ = [
         ('x', bm_CKFLOAT),