filebuf_sputn_unbuf.cc: Include unistd.h for unlink.

filebuf_sputn_unbuf.cc: Include unistd.h for unlink.

2011-08-03  Benjamin Kosnik  <bkoz@redhat.com>

	* testsuite/performance/27_io/filebuf_sputn_unbuf.cc: Include
	unistd.h for unlink.
	* testsuite/performance/27_io/ofstream_insert_int.cc: Same.
	* testsuite/performance/27_io/ifstream_extract_int.cc: Same.
	* testsuite/performance/27_io/ifstream_getline-2.cc: Same.
	* testsuite/performance/27_io/fstream_seek_write.cc: Same.
	* testsuite/performance/27_io/ifstream_extract_chars.cc: Same.
	* testsuite/performance/27_io/ofstream_insert_float.cc: Same.
	* testsuite/performance/27_io/ifstream_extract_float.cc: Same.
	* testsuite/performance/27_io/filebuf_sputc.cc: Same.

From-SVN: r177307