getSdkPath doesn't work when using the dart executable produced when building from source.

[sigurdm]

// test.dart
import 'package:cli_util/cli_util.dart';

main() {
  print(getSdkPath());
}

dart-sdk/sdk$ out/ReleaseX64/dart test.dart
/usr/local/google/home/sigurdm/projects/dart-sdk/sdk/out

That is not really a helpful directory.
I am not sure where the out/ReleaseX64/dart binary reads its corelibs from, but I think that should be the returned directory.

This might be a duplicate of: #38 - not sure