non fatal configure error with higher version of gettext.m4

[Changqing Li]

Hi,

Maybe this is not exactly counted as a bug,  but a problem I met.

I met below error during configure bash since I don't use gettext.m4 
locally, but use my local version. which is higher version.

acinclude.m4:7:   run info Automake 'Extending aclocal'
acinclude.m4:7:   or see 
https://www.gnu.org/software/automake/manual/automake.html#Extending-aclocal
ERROR: invalid first argument to AM_GNU_GETTEXT
ERROR: Use of AM_GNU_GETTEXT without [external] argument is no longer 
supported.
autoreconf: configure.ac: tracing


since this commit 
https://github.com/autotools-mirror/gettext/commit/ed4cb97d6336f193f1aabe479f916469c26611e8, 

'no-libtool' which is used by bash is dropped.

So I think maybe gettext.m4 should be updated to make all conditions can 
work?

Thanks.


//Changqing