Roll libxml to 8effcb578e0590cc01bbcab0f9dccefc6bdbcdbd

third_party/libxml/src/m4/ltsugar.m4

Index: third_party/libxml/src/m4/ltsugar.m4
diff --git a/third_party/libxml/src/m4/ltsugar.m4 b/third_party/libxml/src/m4/ltsugar.m4
index 48bc9344a4d661e116be1483d5520753875b2bd1..9000a057d31ddf75cb85ccda8757de4493bcdbe7 100644
--- a/third_party/libxml/src/m4/ltsugar.m4
+++ b/third_party/libxml/src/m4/ltsugar.m4
@@ -1,7 +1,6 @@
 # ltsugar.m4 -- libtool m4 base layer.                         -*-Autoconf-*-
 #
-# Copyright (C) 2004-2005, 2007-2008, 2011-2015 Free Software
-# Foundation, Inc.
+# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
 # Written by Gary V. Vaughan, 2004
 #
 # This file is free software; the Free Software Foundation gives
@@ -34,7 +33,7 @@ m4_define([_lt_join],
 # ------------
 # Manipulate m4 lists.
 # These macros are necessary as long as will still need to support
-# Autoconf-2.59, which quotes differently.
+# Autoconf-2.59 which quotes differently.
 m4_define([lt_car], [[$1]])
 m4_define([lt_cdr],
 [m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
@@ -45,7 +44,7 @@ m4_define([lt_unquote], $1)
 
 # lt_append(MACRO-NAME, STRING, [SEPARATOR])
 # ------------------------------------------
-# Redefine MACRO-NAME to hold its former content plus 'SEPARATOR''STRING'.
+# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
 # Note that neither SEPARATOR nor STRING are expanded; they are appended
 # to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
 # No SEPARATOR is output if MACRO-NAME was previously undefined (different