Add a new tar-copy-preserve-time variable

* lisp/tar-mode.el (tar-copy-preserve-time): New variable (bug#11882).
(tar-copy): Use it.
1 job for master in 16 minutes and 18 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #3792
test-all

00:16:18

 
Name Stage Failure
failed
test-all Test
make[2]: *** [compile-main] Error 2
Makefile:319: recipe for target 'compile-main' failed
make[2]: Leaving directory '/builds/emacs/emacs/lisp'
Makefile:411: recipe for target 'lisp' failed
make[1]: Leaving directory '/builds/emacs/emacs'
make[1]: *** [lisp] Error 2
make: *** [bootstrap] Error 2
Makefile:1117: recipe for target 'bootstrap' failed
ERROR: Job failed: exit code 1