Fixed typo in windows compatibility commit

The windows compatability commit included a typo in the stdout variable name, causing stdout to be unreachable.  I added the missing t to stdou so that the proper output handle is available.
Resolved errors with command structure on windows

Errors were being encountered due to the command list structure for Pope, which caused failure on windows systems for adb commands which specified a device.  This resolves these issues.
Resolved lingering win/posix cross-platform issue

The prior commit included a typo that prevented mapping of stdout.  This is resolved in this commit.

In addition, there is a lingering issue detected in testing in which the test windows system's calls to Popen were not converting the input list to a string for execution.  This commit explicitly checks for windows systems, in __build_command__ and outputs a string on windows systems, and a list on non-windows systems.
Merge pull request #4 from akatz2/master

Resolution of issues found in cross platform testing