* lib/install-sh (initialize_posix_glob): New var.

* lib/install-sh (initialize_posix_glob): New var.
Use it instead of setting posix_glob inline.
(posix_glob): Use '?'/''/: instead of ''/yes/no, for convenience.
(cmpprog, CMPPROG): New vars, since we use cmp rather than the diff
of Akim's patch.
Use LC_ALL before invoking 'ls' when we depend on its output format.
Don't use awk; just use the shell's builtin features.
Clean up $dsttmp -C detects no installation is needed.
* tests/defs.in (is_newest): Renamed from is_younger; the new
name is more accurate.  All uses changed.
(old_timestamp): New var.
* tests/instsh2.test: Rewrite to avoid the need for sleeping.

2006-12-25  Akim Demaille  <akim@epita.fr>

* lib/install-sh: Implement install-sh -C.
(This patch is the remaining part of the patch proposed in
<http://lists.gnu.org/archive/html/automake-patches/2006-10/msg00077.html>.)
(usage): Document it.
(copy_on_change): New var.
* tests/defs.in (is_younger): New function.
* tests/instsh2.test: Check install-sh -C.