Update m4 macros from autoconf-archive

license.txt

@@ -34,6 +34,7 @@ Copyright: 2008 Benjamin Kosnik <bkoz@redhat.com>
            2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
            2015 Paul Norman <penorman@mac.com>
            2015 Moritz Klammler <moritz@klammler.eu>
+           2016 Krzesimir Nowak <qdlacz@gmail.com>
 License: FSFAP
 
 Files: m4/ax_latex_class.m4 m4/ax_tex_test.m4

m4/ax_boost_filesystem.m4

 # ===========================================================================
-#    http://www.gnu.org/software/autoconf-archive/ax_boost_filesystem.html
+#   https://www.gnu.org/software/autoconf-archive/ax_boost_filesystem.html
 # ===========================================================================
 #
 # SYNOPSIS
@@ -31,7 +31,7 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 26
+#serial 27
 
 AC_DEFUN([AX_BOOST_FILESYSTEM],
 [

m4/ax_boost_system.m4

 # ===========================================================================
-#      http://www.gnu.org/software/autoconf-archive/ax_boost_system.html
+#     https://www.gnu.org/software/autoconf-archive/ax_boost_system.html
 # ===========================================================================
 #
 # SYNOPSIS
@@ -31,7 +31,7 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 18
+#serial 19
 
 AC_DEFUN([AX_BOOST_SYSTEM],
 [

m4/ax_cxx_compile_stdcxx_14.m4

-# ============================================================================
-#  http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_14.html
-# ============================================================================
+# =============================================================================
+#  https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_14.html
+# =============================================================================
 #
 # SYNOPSIS
 #
@@ -28,7 +28,7 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 4
+#serial 5
 
 AX_REQUIRE_DEFINED([AX_CXX_COMPILE_STDCXX])
 AC_DEFUN([AX_CXX_COMPILE_STDCXX_14], [AX_CXX_COMPILE_STDCXX([14], [$1], [$2])])