#752 exec output console logging.

[Oleksii Mudryk]

<exec /> task does not put anything to console if output attribute is set to a filename.

This bug appears starting from 0.90 alpha release, and until the latest release 0.91-alpha2 at the moment.

My build scripts often use the behavior when nant puts it to console and logging output, I need to review the output even if is it put to sume file by output attribute, this file can be on some remote machine, it could be appended, etc.

So I have to patch your new releases with 0.86 code
to avoid changing all my build scripts to make them add output file content explicitly.

[Oleksii Mudryk]

run test.cmd, review the .. files (bug demo build script with some output results)

[Ryan Boggs]

I'll take a look at this...