(From GCC:) Add testcases and missing changelogs:

(From GCC:) Add testcases and missing changelogs:
2000-08-31  Hans-Peter Nilsson  <hp@axis.com>

	* testsuite/demangle-expected: Add nine tests for
	underscore-after-number followed by five tests for name-signature
	delimiter.

2000-07-24  Hans-Peter Nilsson  <hp@axis.com>

	* cplus-dem.c (work_stuff_copy_to_from): New.
	(delete_non_B_K_work_stuff): New.
	(delete_work_stuff): New.
	(mop_up): Break out work_stuff destruction to delete_work_stuff.
	(iterate_demangle_function): New.
	(demangle_prefix): Call iterate_demangle_function instead of
	demangle_function_name.  Leave handling of name-signature
	__-delimiters to iterate_demangle_function.

	* cplus-dem.c (demangle_integral_value): Strip an optional
	following underscore cautiously.  Handle negative numbers.