2018-05-18  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/84846
	* coverage.c (coverage_init): Write PWD to .gcno file.
	* doc/gcov.texi: Document how working directory is printed.
	* gcov-dump.c (dump_gcov_file): Print PWD.
	* gcov.c (output_intermediate_file): Likewise.
	(read_graph_file): Read PWD string.
	(output_lines): Print PWD.

From-SVN: r260359