UpuConsole: -o ignored if directory already exists

[russt]

This works okay:

$ mono /scm/p4proj/main/p4connect/UPU/UpuConsole.exe -o /tmp/foodir -i dist/P4Connect.unitypackage
Extracting dist/P4Connect.unitypackage to /tmp/foodir
Decompressed: P4Connect.unitypackage
Extracting /var/folders/lZ/lZCSnMPVHt4tXtOYjErkFE+++TI/-Tmp-/Upu/iyvrrmdy.ejr/P4Connect to /var/folders/lZ/lZCSnMPVHt4tXtOYjErkFE+++TI/-Tmp-/Upu/iyvrrmdy.ejr/content...
Creating directory /tmp/foodir/Assets/P4Connect/Editor...
Extracting file /tmp/foodir/Assets/P4Connect/Editor/libp4bridge.dylib...
Extracting file /tmp/foodir/Assets/P4Connect/Editor/PackageIcons.cs...
Extracting file /tmp/foodir/Assets/P4Connect/readme.txt...
Extracting file /tmp/foodir/Assets/P4Connect/Editor/Icons.pack...

However, if output directory already exists, UpuConsole confusingly ignores the -o argument, and unpacks to the default location with an incremented unpack count:

$ mono /scm/p4proj/main/p4connect/UPU/UpuConsole.exe -o /tmp/foodir -i dist/P4Connect.unitypackage
Extracting dist/P4Connect.unitypackage to /Volumes/tanami-ufs/p4proj/main/p4connect/dist/P4Connect.unitypackage_unpacked (2)
Decompressed: P4Connect.unitypackage
Extracting /var/folders/lZ/lZCSnMPVHt4tXtOYjErkFE+++TI/-Tmp-/Upu/sg7t3k6x.xky/P4Connect to /var/folders/lZ/lZCSnMPVHt4tXtOYjErkFE+++TI/-Tmp-/Upu/sg7t3k6x.xky/content...
Creating directory /Volumes/tanami-ufs/p4proj/main/p4connect/dist/P4Connect.unitypackage_unpacked (2)/Assets/P4Connect/Editor...
Extracting file /Volumes/tanami-ufs/p4proj/main/p4connect/dist/P4Connect.unitypackage_unpacked (2)/Assets/P4Connect/Editor/libp4bridge.dylib...
Extracting file /Volumes/tanami-ufs/p4proj/main/p4connect/dist/P4Connect.unitypackage_unpacked (2)/Assets/P4Connect/Editor/PackageIcons.cs...
Extracting file /Volumes/tanami-ufs/p4proj/main/p4connect/dist/P4Connect.unitypackage_unpacked (2)/Assets/P4Connect/readme.txt...
Extracting file /Volumes/tanami-ufs/p4proj/main/p4connect/dist/P4Connect.unitypackage_unpacked (2)/Assets/P4Connect/Editor/Icons.pack...

Would probably be better to unpack to:

/tmp/foodir (2)

to be consistent with the behaviour when the -o option is not specified.