check_bindiron commit Makefile: add a target which will abort compilation with ancient shells (6dc4627)
   1#!/bin/sh
   2bindir="$1"
   3gitexecdir="$2"
   4gitcmd="$3"
   5if test "$bindir" != "$gitexecdir" -a -x "$gitcmd"
   6then
   7        echo
   8        echo "!! You have installed git-* commands to new gitexecdir."
   9        echo "!! Old version git-* commands still remain in bindir."
  10        echo "!! Mixing two versions of Git will lead to problems."
  11        echo "!! Please remove old version commands in bindir now."
  12        echo
  13fi