Hi,

This small patch build and include tags file for generated source
files under $(objdir).  This is helpful to browse source files using
TAGS.  Tested on my i686-pc-linux-gnu machine.

Is it OK?

Thanks,
Mingjie

2011-06-21  Mingjie Xing  <mingjie.xing@gmail.com>

        * Makefile.in (TAGS): Add new object obj.tags, include tags file
        for generated source files under $(objdir).