* gold/archive.h (Add_lib_group_symbols): Add readsyms_blocker_, adjust

constructor, and set_blocker.
	* gold/archive.cc (Add_lib_group_symbols::is_runnable): Also check
	readsyms_blocker_.
	* gold/readsyms.cc (Read_symbols::do_lib_group): Also pass
	this->this_blocker_ to Add_lib_group_symbols::set_blocker.
	* testsuite/Makefile.am (start_lib_test): New test case.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/start_lib_test_main.c: New file.
	* testsuite/start_lib_test_1.c: New file.
	* testsuite/start_lib_test_2.c: New file.
	* testsuite/start_lib_test_3.c: New file.

gold/testsuite/start_lib_test_main.c

@@ -0,0 +1,33 @@
+/* start_lib_test_main.c -- test --start-lib/--end-lib.
+
+   Copyright 2010 Free Software Foundation, Inc.
+   Written by Cary Coutant <ccoutant@google.com>
+
+   This file is part of gold.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.
+
+   This is a test of the --start-lib and --end-lib options.  */
+
+extern void t1 (void);
+
+int
+main (int argc __attribute__ ((unused)),
+      char** argv __attribute__ ((unused)))
+{
+  t1 ();
+  return 0;
+}