Minitar TC_Tar__Input.test_each_works expected result should use Time.gm instead of Time.mktime (a.k.a. Time.local)

[halostatue]

I am in the Pacific time zone, and the test data for Minitar 0.5.1 clearly were created using Eastern time zone times,
as the test below fails because the times are three hours off. So instead of using Time.mktime (a.k.a. Time.local)
to create the expected times, use Time.gm (a.k.a. Time.utc) to create them to match the values in the test data (or
change the test data so that it's easier to specify the argument to Time.gm).

>ruby install.rb
Checking for test cases:

Loaded suite Unnamed TestSuite
Started
.F...................
Finished in 0.969 seconds.

  1) Failure:
test_each_works(TC_Tar__Input)
    [./tests/tc_tar.rb:509:in `test_each_works'
     C:/Progra~1/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `e
ach_with_index'
     ./lib/archive/tar/minitar.rb:679:in `each'
     ./lib/archive/tar/minitar.rb:614:in `each_entry'
     ./lib/archive/tar/minitar.rb:605:in `each_entry'
     ./lib/archive/tar/minitar.rb:587:in `each'
     ./lib/archive/tar/minitar.rb:679:in `each'
     ./tests/tc_tar.rb:504:in `test_each_works'
     ./lib/archive/tar/minitar.rb:655:in `open'
     ./tests/tc_tar.rb:502:in `test_each_works']:
<1072944000> expected but was
<1072933200>.

21 tests, 348 assertions, 1 failures, 0 errors