go back to using File::Temp and don't check length

Signed-off-by: Caleb Cushing <xenoterracide@gmail.com>
5.008 should no longer be required

Signed-off-by: Caleb Cushing <xenoterracide@gmail.com>
require 5.006

Signed-off-by: Caleb Cushing <xenoterracide@gmail.com>
1.04

	- fix tests to work on older perls