howto.html ('LWG Issues'): Add issue 60, partial implementation only.

2003-04-23  Phil Edwards  <pme@gcc.gnu.org>

	* docs/html/ext/howto.html ('LWG Issues'):  Add issue 60, partial
	implementation only.
	* include/bits/istream.tcc (putback, unget, sync, tellg, seekg):
	Comment and change to comply with DR 60 and the effect on gcount().
	* include/std/std_istream.h:  Update comments.
	* testsuite/27_io/basic_istream/putback/char/1.cc (test01):  Add
	comments about reasons for tests.  Test sync() against gcount().
	* testsuite/27_io/basic_istream/seekg/char/2.cc:  New file, test
	for effect on gcount().
	* testsuite/27_io/basic_istream/tellg/char/2.cc:  New file, test
	for effect on gcount().

From-SVN: r65983