the fixes the usage of exec_prefix so configure will prepend the prefix again.
Signed-off-by: Robert Förster <Dessa@gmake.de>
AC_SUBST([libdirname])
# The original default values of {bin,sbin,lib}dir
-usrbin_execdir='${_exec_prefix}/bin'
+usrbin_execdir='${exec_prefix}/bin'
AC_SUBST([usrbin_execdir])
-usrsbin_execdir='${_exec_prefix}/sbin'
+usrsbin_execdir='${exec_prefix}/sbin'
AC_SUBST([usrsbin_execdir])
-usrlib_execdir='${_exec_prefix}/'$libdirname
+usrlib_execdir='${exec_prefix}/'$libdirname
AC_SUBST([usrlib_execdir])