Fix tests failing if run between Nov 7 16:50:57 -0800 and Jan 1 00:00:00 -0800
Don't let Ruby auto-delete archives
Merge pull request #192 from othatbrian/master

Fix tests failing if run between Nov 7 16:50:57 and Jan 1 00:00:00
Merge pull request #193 from adamhooper/master

Don't let Ruby auto-delete temporary archives
Removed the Dir.chdir in `list_files`
Removed a Dir.chdir from `command`
Removed a Dir.chdir from `self.export`
Removed Dir.chdir from `repo_size`
Removed Dir.chdir from `construct_status`
Removed Dir.chdir from `config_get`.
We know this is safe because a- there is a bug where `build_list` is being called, but that's obviously a bug copied from `config_list`.
Also, if `@git_dir` is non-nil, `#command` will already ensure the command is run within `@git_dir` as the working directory.
Removed Dir.chdir from `config_list`.
We know this is safe because if `@git_dir` is non-nil, `#command_lines` will already ensure the command is run within `@git_dir` as the working directory.
Removed modern hash-syntax which broke compatibility for ruby 1.8