emacs-x: avoid system faccessat

Just setting ac_cv_func_faccessat=no just leads to emacs hanging when
trying to use that function, so we need to modify m4 script as
well. Fixes https://github.com/termux/x11-packages/issues/497.

x11-packages/emacs-x/build.sh

@@ -3,7 +3,7 @@ TERMUX_PKG_DESCRIPTION="Extensible, customizable text editor-and more"
 TERMUX_PKG_LICENSE="GPL-3.0"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION=27.2
-TERMUX_PKG_REVISION=2
+TERMUX_PKG_REVISION=3
 TERMUX_PKG_SRCURL=https://ftp.gnu.org/gnu/emacs/emacs-${TERMUX_PKG_VERSION}.tar.xz
 TERMUX_PKG_SHA256=b4a7cc4e78e63f378624e0919215b910af5bb2a0afc819fad298272e9f40c1b9
 TERMUX_PKG_DEPENDS="fontconfig, freetype, gdk-pixbuf, giflib, glib, libgnutls, libice, libjpeg-turbo, libpng, librsvg, libsm, libtiff, libx11, libxaw, libxcb, libxext, libxfixes, libxft, libxinerama, libxml2, libxmu, libxpm, libxrandr, libxrender, libxt, littlecms, ncurses, zlib"
@@ -47,6 +47,10 @@ TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" ac_cv_lib_elf_elf_begin=no"
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" gl_cv_func_dup2_works=no"
 # disable setrlimit function to make termux-am work from within emacs
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" ac_cv_func_setrlimit=no"
+# for some reason faccessat calls fails with "invalid argument"
+# starting from ndk-r23
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" ac_cv_func_faccessat=no"
+
 TERMUX_PKG_HOSTBUILD=true
 
 # Remove some irrelevant files:

x11-packages/emacs-x/replace_faccessat.patch

@@ -0,0 +1,12 @@
+diff --git a/m4/faccessat.m4 b/m4/faccessat.m4
+index 9d6b3635117..ff1f803d405 100644
+--- a/m4/faccessat.m4
++++ b/m4/faccessat.m4
+@@ -19,6 +19,7 @@ AC_DEFUN([gl_FUNC_FACCESSAT],
+   AC_CHECK_FUNCS_ONCE([faccessat])
+   if test $ac_cv_func_faccessat = no; then
+     HAVE_FACCESSAT=0
++    REPLACE_FACCESSAT=1
+   else
+     case $gl_cv_func_lstat_dereferences_slashed_symlink in
+       *yes) ;;