Add a fast way to disable building gtest in deps. The SVN has not responded for a few hours today, should not be a permanent problem, but easy to skip now.
Add a fast way to disable building gtest in deps. The SVN has not responded for a few hours today, should not be a permanent problem, but easy to skip now.

realXtend/tundra-urho3d,realXtend/tundra-urho3d,realXtend/tundra-urho3d,realXtend/tundra-urho3d,realXtend/tundra-urho3d