C++STYLE (classname): Add more existing and stylish patterns.

C++STYLE (classname): Add more existing and stylish patterns.

2001-01-16  Benjamin Kosnik  <bkoz@redhat.com>

	* docs/html/17_intro/C++STYLE (classname): Add more existing
	and stylish patterns.

	libstdc++/944
	* include/bits/istream.tcc (istream::sentry::sentry()): Set
	failbit if the state of the stream is not good.
	* testsuite/27_io/istream_sentry.cc (test02): Add test.
	* testsuite/27_io/istream_manip.cc (test01): Modify.

	libstdc++/1019
	reported by Paolo Carlini <pcarlini@unitus.it>
	* include/bits/istream.tcc (operator>>(istream&, string&)): Fix.
	* testsuite/21_strings/inserters_extractors.cc (test08): Add test.

	libstdc++/1057
	* include/bits/std_streambuf.h (setp): Set _M_buf_size correctly.
	* include/bits/streambuf.tcc (xsputn): Remove outside if clause.
	(xsgetn): Same. Simplify.
	* testsuite/27_io/streambuf.cc (test04): Add testcases.

	reported by Larry Evans <jcampbell3@prodigy.net>
	* include/bits/streambuf.tcc (streambuf::xsputn): Just check for
	equality with eof on returned value from overflow.

From-SVN: r39060