build: Allow building with Autoconf 2.70.

* libtextstyle/autogen.sh: Update comment.

diff --git a/libtextstyle/autogen.sh b/libtextstyle/autogen.sh
index b9658f9acccb2b7b7a3fa13949c56b2783dd6f74..7048be5c0e23a4421fdf049991c4ad0486c871e5 100755 (executable)
--- a/libtextstyle/autogen.sh
+++ b/libtextstyle/autogen.sh
@@ -4,7 +4,7 @@
 # also regenerates all aclocal.m4, config.h.in, Makefile.in, configure files
 # with new versions of autoconf or automake.
 #
-# This script requires autoconf-2.64..2.69 and automake-1.11..1.16 in the PATH.
+# This script requires autoconf-2.64..2.70 and automake-1.11..1.16 in the PATH.
 # If not used from a released tarball, it also requires
 #   - the GNULIB_SRCDIR environment variable pointing to a gnulib checkout.