Avoid enabling gnulib fcntl wrapper

This lessens bloat and fixes 64-bit compiles (the gnulib fcntl
wrapper uses getdtablesize() which does not exist for 64-bit).

build-package.sh

@@ -354,7 +354,8 @@ termux_step_configure () {
 	local AVOID_AUTOCONF_WRAPPERS="ac_cv_func_malloc_0_nonnull=yes ac_cv_func_realloc_0_nonnull=yes"
 	# Similarly, disable gnulib's rpl_getcwd(). It returns the wrong value, affecting zile. See
 	# <https://github.com/termux/termux-packages/issues/76>.
-	local AVOID_AUTOCONF_WRAPPERS="gl_cv_func_getcwd_null=yes gl_cv_func_getcwd_posix_signature=yes gl_cv_func_getcwd_path_max=yes gl_cv_func_getcwd_abort_bug=no $AVOID_AUTOCONF_WRAPPERS"
+	AVOID_AUTOCONF_WRAPPERS+=" gl_cv_func_getcwd_null=yes gl_cv_func_getcwd_posix_signature=yes gl_cv_func_getcwd_path_max=yes gl_cv_func_getcwd_abort_bug=no"
+	AVOID_AUTOCONF_WRAPPERS+=" gl_cv_header_working_fcntl_h=yes gl_cv_func_fcntl_f_dupfd_cloexec=yes gl_cv_func_fcntl_f_dupfd_works=yes"
 
 	env $AVOID_AUTOCONF_WRAPPERS $TERMUX_PKG_SRCDIR/configure \
 		--disable-dependency-tracking \