Imported readline 6.2, and upstream patch 001.

[patch 0/3] readline-6.2 rebase
http://sourceware.org/ml/gdb-patches/2011-05/msg00003.html
[patch 1/3] readline-6.2: Merge of already posted patches
http://sourceware.org/ml/gdb-patches/2011-05/msg00004.html
	=
	[Bug-readline] [RFC/readline] bind.c, rl_function_dumper, Free allocated
	http://lists.gnu.org/archive/html/bug-readline/2011-03/msg00000.html
	[Bug-readline] [patch] Fix underquotation in readline/examples/rlfe/conf
	http://lists.gnu.org/archive/html/bug-readline/2011-04/msg00001.html
	[Bug-readline] [patch] Makefile.in htm<->html
	http://lists.gnu.org/archive/html/bug-readline/2011-04/msg00002.html
	Re: [Bug-readline] [patch] Makefile.in dependency: callback.o: xmalloc.h
	http://lists.gnu.org/archive/html/bug-readline/2011-04/msg00004.html
	[Bug-readline] [patch] Remove . from the VPATH directive
	http://lists.gnu.org/archive/html/bug-readline/2011-04/msg00005.html
	Eli Zaretskii's __MSDOS__ / __GO32__ / __MINGW32__ / __DJGPP__ stuff:
	http://sourceware.org/ml/gdb/2011-04/msg00002.html
	Jan Kratochvil's patch for FSF GDB tree local-specific changes:
	http://sourceware.org/ml/gdb/2011-04/msg00006.html
	Preservation of existing ChangeLog.gdb files, their updates.
[patch 2/3] readline-6.2: Workaround "ask" regression
http://sourceware.org/ml/gdb-patches/2011-05/msg00005.html
[patch 3/3] readline-6.2: Revert 5.x compat., apply 6.x compat.
http://sourceware.org/ml/gdb-patches/2011-05/msg00006.html
[patch 4/3] readline-6.2: Substitute inc-hist.texinfo
http://sourceware.org/ml/gdb-patches/2011-05/msg00010.html

readline/
	Workaround gdb.base/completion.exp regression on readline-6.2.
	* complete.c (get_y_or_n): Disable the return on RL_STATE_CALLBACK.

	Imported readline 6.2, and upstream patch 001.
	* configure: Regenerate.

readline/doc/
	* hsuser.texi (Using History Interactively): Disable !BashFeatures
	@defcodeindex.  Make the `Programming with GNU History' reference
	external.
	* inc-hist.texinfo: Remove.

	Imported readline 6.2, and upstream patch 001.

readline/examples/
	Imported readline 6.2, and upstream patch 001.

readline/examples/rlfe/
	Imported readline 6.2, and upstream patch 001.

gdb/
	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac <--with-system-readline> (for readline_echoing_p):
	Remove the test.
	* tui/tui-io.c (tui_old_readline_echoing_p): Rename to ...
	(tui_old_rl_echoing_p): ... here.
	(tui_setup_io): Rename extern declaration readline_echoing_p to
	_rl_echoing_p.  Adjust assignments for the both renames.

gdb/doc/
	* Makefile.in (GDB_DOC_SOURCE_INCLUDES): Rename inc-hist.texinfo to
	hsuser.texi.
	* gdb.texinfo <!SYSTEM_READLINE>: Rename inc-hist.texinfo inclusion and
	comment to hsuser.texi.  Change rluser.texi name in the comment.

1 files changed, 50 insertions, 0 deletions

diff --git a/readline/xfree.c b/readline/xfree.c
new file mode 100644
index 00000000000..37a81e6c236
--- /dev/null
+++ b/readline/xfree.c
@@ -0,0 +1,50 @@
+/* xfree.c -- safe version of free that ignores attempts to free NUL */
+
+/* Copyright (C) 1991-2010 Free Software Foundation, Inc.
+
+   This file is part of the GNU Readline Library (Readline), a library
+   for reading lines of text with interactive input and history editing.      
+
+   Readline 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.
+
+   Readline 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 Readline.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+#include <config.h>
+#endif
+
+#if defined (HAVE_STDLIB_H)
+#  include <stdlib.h>
+#else
+#  include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include "xmalloc.h"
+
+/* **************************************************************** */
+/*								    */
+/*		   Memory Deallocation.				    */
+/*								    */
+/* **************************************************************** */
+
+/* Use this as the function to call when adding unwind protects so we
+   don't need to know what free() returns. */
+void
+xfree (string)
+     PTR_T string;
+{
+  if (string)
+    free (string);
+}