[PATCH v3] gdb/gdbserver: switch to AC_CONFIG_MACRO_DIRS

[Simon Marchi]

On 2021-06-19 10:22 p.m., Mike Frysinger via Gdb-patches wrote:
> These dirs don't use automake, so use AC_CONFIG_MACRO_DIRS to specify
> ../config as a search dir for m4 macros.  This allows removal of a lot
> of hand-written m4_include's from acinclude.m4 files, and simplifies
> use of `aclocal` or `autoreconf` as manual -I is not needed.

LGTM, thanks.

Simon