make-target-delegates: line break between return type and function name
    
    Before the target_ops C++ification, this wasn't necessary simply
    because the methods were wrapped in ()'s, like
      '(*to_my_long_method_name) (target_ops *)',
    so
      std::vector<long_type_name>(*to_my_long_method_name) ()TARGET_DEFAULT_IGNORE ()
    
    still parsed correctly.  With the (*) gone, we need this.
    
    gdb/ChangeLog:
    yyyy-mm-dd  Pedro Alves  <palves@redhat.com>
    
    	* make-target-delegates (scan_target_h): Don't trim lines here.
    	Replace sequences of tabs and/or whitespace with a single
    	whitespace.
    	(top level, parsing methods): Trim each line before processing it
    	here.