istream.tcc: Removed test for _M_gcount < in_avail()...

2000-10-03  Brent Verner  <brent@rcfile.org>

        * bits/istream.tcc [basic_istream::get(basic_streambuf&)]: Removed
	test for _M_gcount < in_avail(), as in_avail() only reports info
	for current buffer, causing method to return at end of buffer.
	* testsuite/27_io/istream_unformatted.cc [test07()]: New test.
	* testsuite/27_io/istream_unformatted-3.txt: New file.
	* testsuite/27_io/istream_unformatted-3.tst: New file.

From-SVN: r36751