2009-07-22  Paul Pluzhnikov  <ppluzhnikov@google.com>
    
    	* objfiles.h (objfiles_changed): New prototype.
    	* objfiles.c (objfiles_updated_p): Rename to objfiles_changed_p.
    	(allocate_objfile, free_objfile): Must rebuild section map.
    	(objfile_relocate): Likewise.
    	(update_section_map, find_pc_section): Adjust.
    	(set_objfiles_updated_on_exe_change): Remove.
    	(set_objfiles_updated_on_solib_activity): Remove.
    	(_initialize_objfiles): Remove.
    	(objfiles_changed): New function.
    	* symfile.c (reread_symbols): Call objfiles_changed.